diff --git a/src/audio/selector/selector.c b/src/audio/selector/selector.c
index 40a4a2c5b888..698fe59026bd 100644
--- a/src/audio/selector/selector.c
+++ b/src/audio/selector/selector.c
@@ -572,9 +572,9 @@ static void build_config(struct comp_data *cd, struct module_config *cfg)
 	cd->config.out_channels_count = out_fmt->channels_count;
 
 	/* Build default coefficient array (unity Q10 on diagonal, i.e. pass-through mode) */
-	memset(&cd->coeffs_config, 0, sizeof(cd->coeffs_config));
+	memset(cd->coeffs_config, 0, sizeof(*cd->coeffs_config));
 	for (i = 0; i < MIN(SEL_SOURCE_CHANNELS_MAX, SEL_SINK_CHANNELS_MAX); i++)
-		cd->coeffs_config.coeffs[i][i] = 1 << 10;
+		cd->coeffs_config->coeffs[i][i] = SEL_COEF_ONE_Q10;
 }
 
 static int selector_init(struct processing_module *mod)
@@ -618,8 +618,20 @@ static int selector_init(struct processing_module *mod)
 		return -ENOMEM;
 
 	cd->sel_ipc4_cfg.init_payload_fmt = payload_fmt;
-	md->private = cd;
 
+	/* Allocate space for max number of configurations. */
+	cd->multi_coeffs_config_size =
+		SEL_MAX_NUM_CONFIGS * sizeof(struct ipc4_selector_coeffs_config);
+	cd->multi_coeffs_config = mod_zalloc(mod, cd->multi_coeffs_config_size);
+	if (!cd->multi_coeffs_config) {
+		mod_free(mod, cd);
+		return -ENOMEM;
+	}
+
+	/* Default configuration is set to first configuration */
+	cd->coeffs_config = &cd->multi_coeffs_config[0];
+
+	md->private = cd;
 	if (payload_fmt == IPC4_SEL_INIT_PAYLOAD_BASE_WITH_EXT) {
 		size_t size = sizeof(struct sof_selector_ipc4_pin_config);
 
@@ -733,6 +745,7 @@ static int selector_free(struct processing_module *mod)
 
 	comp_dbg(mod->dev, "entry");
 
+	mod_free(mod, cd->multi_coeffs_config);
 	mod_free(mod, cd);
 
 	return 0;
@@ -769,13 +782,27 @@ static int selector_set_config(struct processing_module *mod, uint32_t config_id
 			       size_t response_size)
 {
 	struct comp_data *cd = module_get_private_data(mod);
+	int n;
 
 	if (config_id == IPC4_SELECTOR_COEFFS_CONFIG_ID) {
-		if (data_offset_size != sizeof(cd->coeffs_config))
+		if (data_offset_size > cd->multi_coeffs_config_size ||
+		    pos != MODULE_CFG_FRAGMENT_SINGLE) {
+			comp_err(mod->dev, "Failure with size %d pos %d", data_offset_size, pos);
 			return -EINVAL;
+		}
 
-		memcpy_s(&cd->coeffs_config, sizeof(cd->coeffs_config), fragment, data_offset_size);
-		return 0;
+		/* The size must be N times the coefficient vectors size of one channels
+		 * up/down mix profile.
+		 */
+		n = data_offset_size / sizeof(struct ipc4_selector_coeffs_config);
+		if (n < 1 || data_offset_size != n * sizeof(struct ipc4_selector_coeffs_config)) {
+			comp_err(mod->dev, "Invalid configuration size.");
+			return -EINVAL;
+		}
+
+		cd->num_configs = n;
+		return memcpy_s(cd->multi_coeffs_config, cd->multi_coeffs_config_size,
+				fragment, data_offset_size);
 	}
 
 	return -EINVAL;
@@ -799,11 +826,23 @@ static int selector_process(struct processing_module *mod,
 			    struct output_stream_buffer *output_buffers,
 			    int num_output_buffers)
 {
+	struct audio_stream *source;
+	struct audio_stream *sink;
 	struct comp_data *cd = module_get_private_data(mod);
 	uint32_t avail_frames = input_buffers[0].size;
+	uint32_t samples;
 
 	comp_dbg(mod->dev, "entry");
 
+	if (cd->passthrough) {
+		source = input_buffers->data;
+		sink = output_buffers->data;
+		samples = avail_frames * audio_stream_get_channels(source);
+		audio_stream_copy(source, 0, sink, 0, samples);
+		module_update_buffer_position(input_buffers, output_buffers, avail_frames);
+		return 0;
+	}
+
 	if (avail_frames)
 		/* copy selected channels from in to out */
 		cd->sel_func(mod, input_buffers, output_buffers, avail_frames);
@@ -811,6 +850,100 @@ static int selector_process(struct processing_module *mod,
 	return 0;
 }
 
+/**
+ * \brief Loop the array of mix coefficients sets and find a set with matching channels
+ * in and out count.
+ * \param[in,out] cd Selector component data.
+ * \param[in] source_channels Number of channels in source.
+ * \param[in] sink_channels Number of channels in sink.
+ *
+ * \return Boolean value set to true if match was found and cd->coeffs_config is pointed
+ * to the coefficients.
+ */
+static bool selector_config_array_search(struct comp_data *cd, int source_channels,
+					 int sink_channels)
+{
+	int i;
+	bool found = false;
+
+	for (i = 0; i < cd->num_configs; i++) {
+		if (cd->multi_coeffs_config[i].source_channels_count == source_channels &&
+		    cd->multi_coeffs_config[i].sink_channels_count == sink_channels) {
+			cd->coeffs_config = &cd->multi_coeffs_config[i];
+			found = true;
+			break;
+		}
+	}
+
+	return found;
+}
+
+/**
+ * \brief Get mix coefficients set from configuration blob with multiple coefficients sets.
+ *  Also activate more efficient pass-through copy mode if the coefficients indicate 1:1
+ *  copy from source to sink.
+ * \param[in,out] mod Selector base module device.
+ * \param[in] source_channels Number of channels in source.
+ * \param[in] sink_channels Number of channels in sink.
+ *
+ * \return Error code.
+ */
+static int selector_find_coefficients(struct processing_module *mod, int source_channels,
+				      int sink_channels)
+{
+	struct comp_data *cd = module_get_private_data(mod);
+	struct comp_dev *dev = mod->dev;
+	int i, j;
+	int16_t coef;
+	bool found;
+
+	/* The first config for coefficients always exists. It originates from configuration
+	 * blob for a single mix profile or from default values (1.0) from set_selector_params().
+	 */
+	cd->coeffs_config = cd->multi_coeffs_config;
+	if (cd->num_configs > 1) {
+		found = selector_config_array_search(cd, source_channels, sink_channels);
+		if (!found &&  source_channels == sink_channels) {
+			/* The pass-through mix is defined for the max channels count (8) */
+			source_channels = SEL_SOURCE_CHANNELS_MAX;
+			sink_channels = SEL_SINK_CHANNELS_MAX;
+			found = selector_config_array_search(cd, source_channels, sink_channels);
+		}
+
+		if (!found) {
+			comp_err(dev, "No mix coefficients found for %d to %d channels.",
+				 source_channels, sink_channels);
+			return -EINVAL;
+		}
+	}
+
+	/* The pass-through copy function can be used if coefficients are a unit matrix for
+	 * 1:1 stream copy.
+	 */
+	if (source_channels == sink_channels) {
+		cd->passthrough = true;
+		for (i = 0; i < sink_channels; i++) {
+			for (j = 0; j < source_channels; j++) {
+				coef = cd->coeffs_config->coeffs[i][j];
+				if ((i == j && coef != SEL_COEF_ONE_Q10) || (i != j && coef != 0)) {
+					cd->passthrough = false;
+					break;
+				}
+			}
+		}
+	} else {
+		cd->passthrough = false;
+	}
+
+	if (cd->passthrough)
+		comp_info(dev, "Passthrough mode.");
+	else
+		comp_info(dev, "Using coefficients for %d to %d channels.",
+			  source_channels, sink_channels);
+
+	return 0;
+}
+
 /**
  * \brief Prepares selector component for processing.
  * \param[in,out] mod Selector base module device.
@@ -825,6 +958,8 @@ static int selector_prepare(struct processing_module *mod,
 	struct comp_dev *dev = mod->dev;
 	struct comp_buffer *sinkb, *sourceb;
 	size_t sink_size;
+	unsigned int source_channels;
+	unsigned int sink_channels;
 	int ret;
 
 	comp_dbg(dev, "entry");
@@ -855,9 +990,9 @@ static int selector_prepare(struct processing_module *mod,
 	 * proper number of channels [1] for selector to actually
 	 * reduce channel count between source and sink
 	 */
-	comp_info(dev, "source sink channel = %u %u",
-		  audio_stream_get_channels(&sourceb->stream),
-		  audio_stream_get_channels(&sinkb->stream));
+	source_channels = audio_stream_get_channels(&sourceb->stream);
+	sink_channels = audio_stream_get_channels(&sinkb->stream);
+	comp_dbg(dev, "source sink channel = %u %u", source_channels, sink_channels);
 
 	sink_size = audio_stream_get_size(&sinkb->stream);
 
@@ -891,7 +1026,7 @@ static int selector_prepare(struct processing_module *mod,
 		return -EINVAL;
 	}
 
-	return 0;
+	return selector_find_coefficients(mod, source_channels, sink_channels);
 }
 
 /**
diff --git a/src/audio/selector/selector_generic.c b/src/audio/selector/selector_generic.c
index 5b4d8d8f5edd..9f336536585a 100644
--- a/src/audio/selector/selector_generic.c
+++ b/src/audio/selector/selector_generic.c
@@ -228,7 +228,7 @@ static void sel_s16le(struct processing_module *mod, struct input_stream_buffer
 		n = MIN(n, nmax);
 		for (i = 0; i < n; i++) {
 			process_frame_s16le(dest, n_chan_sink, src, n_chan_source,
-					    &cd->coeffs_config);
+					    cd->coeffs_config);
 			src += audio_stream_get_channels(source);
 			dest += audio_stream_get_channels(sink);
 		}
@@ -301,7 +301,7 @@ static void sel_s24le(struct processing_module *mod, struct input_stream_buffer
 		n = MIN(n, nmax);
 		for (i = 0; i < n; i++) {
 			process_frame_s24le(dest, n_chan_sink, src, n_chan_source,
-					    &cd->coeffs_config);
+					    cd->coeffs_config);
 			src += audio_stream_get_channels(source);
 			dest += audio_stream_get_channels(sink);
 		}
@@ -372,7 +372,7 @@ static void sel_s32le(struct processing_module *mod, struct input_stream_buffer
 		n = MIN(n, nmax);
 		for (i = 0; i < n; i++) {
 			process_frame_s32le(dest, n_chan_sink, src, n_chan_source,
-					    &cd->coeffs_config);
+					    cd->coeffs_config);
 			src += audio_stream_get_channels(source);
 			dest += audio_stream_get_channels(sink);
 		}
diff --git a/src/audio/selector/tune/sof_selector_blobs.m b/src/audio/selector/tune/sof_selector_blobs.m
index 83b38be64e3e..5ff0c08a6f81 100644
--- a/src/audio/selector/tune/sof_selector_blobs.m
+++ b/src/audio/selector/tune/sof_selector_blobs.m
@@ -11,46 +11,60 @@
 
 % SPDX-License-Identifier: BSD-3-Clause
 %
-% Copyright (c) 2025, Intel Corporation.
+% Copyright (c) 2025-2026, Intel Corporation.
 
 function sof_selector_blobs()
 
 	% See ITU-R BS.775-4 for mix coefficient values
 	sof_selector_paths(true);
 
+	% Values of enum ipc4_channel_config
+	IPC4_CHANNEL_CONFIG_MONO = 0;
+	IPC4_CHANNEL_CONFIG_STEREO = 1;
+	IPC4_CHANNEL_CONFIG_QUATRO = 5;
+	IPC4_CHANNEL_CONFIG_5_POINT_1 = 8;
+	IPC4_CHANNEL_CONFIG_7_POINT_1 = 12;
+
 	% Matrix for 1:1 pass-through
-	sel.rsvd0 = 0;
-	sel.rsvd1 = 0;
+	sel.ch_count = [8 8]; % Number of channels
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_7_POINT_1 IPC4_CHANNEL_CONFIG_7_POINT_1];
+	sel.ch_out = 8;
 	sel.coeffs = diag(ones(8, 1));
-	write_blob(sel, "passthrough");
+	passthrough_pack8 = write_blob(sel, "passthrough");
 
 	% Stereo to mono downmix
+	sel.ch_count = [2 1];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_STEREO IPC4_CHANNEL_CONFIG_MONO];
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(1, 1) = 0.7071;
 	sel.coeffs(1, 2) = 0.7071;
-	write_blob(sel, "downmix_stereo_to_mono");
+	stereo_to_mono_pack8 = write_blob(sel, "downmix_stereo_to_mono");
 
 	% 5.1 to stereo downmix
+	sel.ch_count = [6 2];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_5_POINT_1 IPC4_CHANNEL_CONFIG_STEREO];
 	fl = 1; fr = 2; fc = 3; lfe = 4; sl = 5; sr = 6;
 	m = zeros(8,8);
 	m(1, fl) = 1.0000; m(1, fr) = 0.0000; m(1, fc) = 0.7071; m(1, sl) = 0.7071; m(1, sr) = 0.0000;
 	m(2, fl) = 0.0000; m(2, fr) = 1.0000; m(2, fc) = 0.7071; m(2, sl) = 0.0000; m(2, sr) = 0.7071;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_51_to_stereo");
 	sel.coeffs(1, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to left
 	sel.coeffs(2, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to right
-	write_blob(sel, "downmix_51_to_stereo_with_lfe");
+	sixch_to_stereo_pack8 = write_blob(sel, "downmix_51_to_stereo_with_lfe");
 
 	% 5.1 to mono downmix
+	sel.ch_count = [6 1];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_5_POINT_1 IPC4_CHANNEL_CONFIG_MONO];
 	fl = 1; fr = 2; fc = 3; lfe = 4; sl = 5; sr = 6;
 	m = zeros(8,8);
 	m(1, fl) = 0.7071; m(1, fr) = 0.7071; m(1, fc) = 1.0000; m(1, sl) = 0.5000; m(1, sr) = 0.5000;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_51_to_mono");
 	sel.coeffs(1, lfe) = 10^(+10/20);
-	write_blob(sel, "downmix_51_to_mono_with_lfe");
+	sixch_to_mono_pack8 = write_blob(sel, "downmix_51_to_mono_with_lfe");
 
 	% 7.1 to 5.1 downmix
+	sel.ch_count = [8 6];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_7_POINT_1 IPC4_CHANNEL_CONFIG_5_POINT_1];
 	fl8 = 1; fr8 = 2; fc8 = 3; lfe8 = 4; bl8 = 5; br8 = 6;	sl8 = 7; sr8 = 8;
 	fl6 = 1; fr6 = 2; fc6 = 3; lfe6 = 4; sl6 = 5; sr6 = 6;
 	m = zeros(8,8);
@@ -63,50 +77,69 @@ function sof_selector_blobs()
 	m(sr6, br8) = 1;
 	m(lfe6, lfe8) = 1;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_71_to_51");
+	eightch_to_sixch_pack8 = write_blob(sel, "downmix_71_to_51");
 
-	% 7.1 to 5.1 downmix
+	% 7.1 to stereo downmix
+	sel.ch_count = [8 2];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_7_POINT_1 IPC4_CHANNEL_CONFIG_STEREO];
 	fl = 1; fr = 2; fc = 3; lfe = 4; bl = 5; br = 6;  sl = 7; sr = 8;
 	m = zeros(8,8);
 	m(1, fl) = 1.0000; m(1, fr) = 0.0000; m(1, fc) = 0.7071; m(1, sl) = 0.7071; m(1, sr) = 0.0000; m(1, bl) = 0.7071; m(1, br) = 0.0000;
 	m(2, fl) = 0.0000; m(2, fr) = 1.0000; m(2, fc) = 0.7071; m(2, sl) = 0.0000; m(2, sr) = 0.7071; m(2, bl) = 0.0000; m(2, br) = 0.7071;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_71_to_stereo");
 	sel.coeffs(1, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to left
 	sel.coeffs(2, lfe) = 10^(+4/20); % +10 dB, attenuate by -6 dB to right
-	write_blob(sel, "downmix_71_to_stereo_with_lfe");
+	eightch_to_stereo_pack8 = write_blob(sel, "downmix_71_to_stereo_with_lfe");
 
 	% 7.1 to mono downmix
+	sel.ch_count = [8 1];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_7_POINT_1 IPC4_CHANNEL_CONFIG_MONO];
 	fl = 1; fc = 3; fr = 2; sr = 8; br = 6; bl = 5; sl = 7; lfe = 4;
 	m = zeros(8,8);
 	m(1, fl) = 0.7071; m(1, fr) = 0.7071; m(1, fc) = 1.0000; m(1, sl) = 0.5000; m(1, sr) = 0.5000; m(1, bl) = 0.5000; m(1, br) = 0.5000;
 	sel.coeffs = m;
-	write_blob(sel, "downmix_71_to_mono");
 	m(1, lfe) = 10^(+19/20); % +10 dB
-	write_blob(sel, "downmix_71_to_mono_with_lfe");
+	eightch_to_mono_pack8 = write_blob(sel, "downmix_71_to_mono_with_lfe");
 
 	% mono to stereo upmix
+	sel.ch_count = [1 2];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_MONO IPC4_CHANNEL_CONFIG_STEREO];
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(1, 1) = 10^(-3/20);
 	sel.coeffs(2, 1) = 10^(-3/20);
-	write_blob(sel, "upmix_mono_to_stereo");
+	mono_to_stereo_pack8 = write_blob(sel, "upmix_mono_to_stereo");
 
 	% mono to 5.1 / 7.1 upmix
-	fc = 3
+	sel.ch_count = [1 6];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_MONO IPC4_CHANNEL_CONFIG_5_POINT_1];
+	fc = 3;
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(fc, 1) = 1;
-	write_blob(sel, "upmix_mono_to_51");
-	write_blob(sel, "upmix_mono_to_71");
+	mono_to_sixch_pack8 = write_blob(sel, "upmix_mono_to_51");
+	sel.ch_count = [1 8];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_MONO IPC4_CHANNEL_CONFIG_7_POINT_1];
+	mono_to_eightch_pack8 = write_blob(sel, "upmix_mono_to_71");
 
 	% stereo to 5.1 / 7.1 upmix
+	sel.ch_count = [2 6];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_STEREO IPC4_CHANNEL_CONFIG_5_POINT_1];
 	fl = 1; fr = 2;
 	sel.coeffs = zeros(8,8);
 	sel.coeffs(fl, 1) = 1;
 	sel.coeffs(fr, 2) = 1;
-	write_blob(sel, "upmix_stereo_to_51");
-	write_blob(sel, "upmix_stereo_to_71");
+	stereo_to_sixch_pack8 = write_blob(sel, "upmix_stereo_to_51");
+	sel.ch_count = [2 8];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_STEREO IPC4_CHANNEL_CONFIG_7_POINT_1];
+	stereo_to_eightch_pack8 = write_blob(sel, "upmix_stereo_to_71");
+
+	% For blob format with multiple up/down-mix profiles, intended
+	% for playback decoder offload conversions.
+	multi_pack8 = [passthrough_pack8 mono_to_stereo_pack8 sixch_to_stereo_pack8 eightch_to_stereo_pack8];
+	write_8bit_packed(multi_pack8, 'stereo_endpoint_playback_updownmix');
 
 	% Stereo to L,L,R,R
+	sel.ch_count = [2 4];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_STEREO IPC4_CHANNEL_CONFIG_QUATRO];
 	sel.coeffs = [ 1 0 0 0 0 0 0 0 ; ...
 		       1 0 0 0 0 0 0 0 ; ...
 		       0 1 0 0 0 0 0 0 ; ...
@@ -118,6 +151,8 @@ function sof_selector_blobs()
 	write_blob(sel, "xover_selector_lr_to_llrr");
 
 	% Stereo to R,R,L,L
+	sel.ch_count = [2 4];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_STEREO IPC4_CHANNEL_CONFIG_QUATRO];
 	sel.coeffs = [ 0 1 0 0 0 0 0 0 ; ...
 		       0 1 0 0 0 0 0 0 ; ...
 		       1 0 0 0 0 0 0 0 ; ...
@@ -129,6 +164,8 @@ function sof_selector_blobs()
 	write_blob(sel, "xover_selector_lr_to_rrll");
 
 	% Stereo to L,R,L,R
+	sel.ch_count = [2 4];
+	sel.ch_config = [IPC4_CHANNEL_CONFIG_STEREO IPC4_CHANNEL_CONFIG_QUATRO];
 	sel.coeffs = [ 1 0 0 0 0 0 0 0 ; ...
 		       0 1 0 0 0 0 0 0 ; ...
 		       1 0 0 0 0 0 0 0 ; ...
@@ -142,32 +179,55 @@ function sof_selector_blobs()
 	sof_selector_paths(false);
 end
 
-function write_blob(sel, blobname)
+function pack8 = write_blob(sel, blobname)
+	pack8 = pack_selector_config(sel);
+	pack8_copy = pack8;
+	pack8_copy(1:4) = uint8([0 0 0 0]);
+	write_8bit_packed(pack8_copy, blobname);
+end
+
+function write_8bit_packed(pack8, blobname)
+	blob8 = sof_selector_build_blob(pack8);
 	str_config = "selector_config";
 	str_exported = "Exported with script sof_selector_blobs.m";
-	str_howto = "cd tools/tune/selector; octave sof_selector_blobs.m"
+	str_howto = "cd tools/tune/selector; octave sof_selector_blobs.m";
 	sof_tools = '../../../../tools';
 	sof_tplg = fullfile(sof_tools, 'topology');
 	sof_tplg_selector = fullfile(sof_tplg, 'topology2/include/components/micsel');
+	tplg2_fn = sprintf("%s/%s.conf", sof_tplg_selector, blobname);
+	sof_check_create_dir(tplg2_fn);
+	sof_tplg2_write(tplg2_fn, blob8, str_config, str_exported, str_howto);
+end
 
-	sel
+function pack8 = pack_selector_config(sel)
 
-	sum_coefs = sum(sel.coeffs, 2)'
-	max_sum_coef = max(sum_coefs)
+	sum_coefs = sum(sel.coeffs, 2)';
+	max_sum_coef = max(sum_coefs);
 	if max_sum_coef > 1
 		scale = 1 / max_sum_coef;
 	else
 		scale = 1;
 	end
 
-	scale
 	sel.coeffs = scale .* sel.coeffs';
+	coeffs_vec = reshape(sel.coeffs, 1, []); % convert to row vector
+	coeffs_q10 = int16(round(coeffs_vec .* 1024)); % Q6.10
+	pack8 = uint8(zeros(1, 2 * length(coeffs_q10) + 4));
 
-	blob8 = sof_selector_build_blob(sel);
-	tplg2_fn = sprintf("%s/%s.conf", sof_tplg_selector, blobname);
-	sof_check_create_dir(tplg2_fn);
-	sof_tplg2_write(tplg2_fn, blob8, str_config, str_exported, str_howto);
-end
+	% header
+	j = 1;
+	pack8(j:j + 1) = uint8(sel.ch_count);
+	j = j + 2;
+	pack8(j:j + 1) = uint8(sel.ch_config);
+	j = j + 2;
+
+	% coeffs matrix
+	for i = 1:length(coeffs_q10)
+		pack8(j:j+1) = int16_to_byte(coeffs_q10(i));
+		j = j + 2;
+	end
+
+   end
 
 function sof_selector_paths(enable)
 
@@ -179,15 +239,11 @@ function sof_selector_paths(enable)
 	end
 end
 
-function blob8 = sof_selector_build_blob(sel)
+function blob8 = sof_selector_build_blob(pack8)
 
-	s = size(sel.coeffs);
 	blob_type = 0;
 	blob_param_id = 0; % IPC4_SELECTOR_COEFFS_CONFIG_ID
-	data_length = s(1) * s(2) + 2;
-	data_size = 2 * data_length; % int16_t matrix
-	coeffs_vec = reshape(sel.coeffs, 1, []); % convert to row vector
-	coeffs_q10 = int16(round(coeffs_vec .* 1024)); % Q6.10
+	data_size = length(pack8);
 	ipc_ver = 4;
 	[abi_bytes, abi_size] = sof_get_abi(data_size, ipc_ver, blob_type, blob_param_id);
 	blob_size = data_size + abi_size;
@@ -195,17 +251,7 @@ function sof_selector_paths(enable)
 	blob8(1:abi_size) = abi_bytes;
 	j = abi_size + 1;
 
-	% header
-	blob8(j:j+1) = int16_to_byte(int16(sel.rsvd0));
-	j = j + 2;
-	blob8(j:j+1) = int16_to_byte(int16(sel.rsvd1));
-	j = j + 2;
-
-	% coeffs matrix
-	for i = 1:(s(1) * s(2))
-		blob8(j:j+1) = int16_to_byte(coeffs_q10(i));
-		j = j + 2;
-	end
+	blob8(j:j+data_size-1) = pack8;
 end
 
 function bytes = int16_to_byte(word)
diff --git a/src/include/sof/audio/selector.h b/src/include/sof/audio/selector.h
index cd4aa926c7f4..14870877aba0 100644
--- a/src/include/sof/audio/selector.h
+++ b/src/include/sof/audio/selector.h
@@ -27,6 +27,9 @@
 struct comp_buffer;
 struct comp_dev;
 
+/** \brief Default mix gain. */
+#define SEL_COEF_ONE_Q10 1024 /* int16(1 * 2^10) */
+
 #if CONFIG_IPC_MAJOR_3
 /** \brief Supported channel count on input. */
 #define SEL_SOURCE_2CH 2
@@ -43,6 +46,9 @@ struct comp_dev;
 /** \brief Maximum supported channel count on output. */
 #define SEL_SINK_CHANNELS_MAX   8
 
+/** \brief Maximum number of configurations in the blob received with set_config() */
+#define SEL_MAX_NUM_CONFIGS	8
+
 #define SEL_NUM_IN_PIN_FMTS	1
 #define SEL_NUM_OUT_PIN_FMTS	1
 
@@ -60,8 +66,10 @@ enum ipc4_selector_config_id {
 
 /** \brief IPC4 mixing coefficients configuration. */
 struct ipc4_selector_coeffs_config {
-	uint16_t rsvd0;	/**< Unused field, keeps the structure aligned with common layout */
-	uint16_t rsvd1;	/**< Unused field, keeps the structure aligned with common layout */
+	uint8_t source_channels_count; /**< Used when multiple profiles are packed into one blob. */
+	uint8_t sink_channels_count; /**< Used when multiple profiles are packed into one blob. */
+	uint8_t source_channel_config; /**< Used when multiple profiles are packed into one blob. */
+	uint8_t sink_channel_config; /**< Used when multiple profiles are packed into one blob. */
 
 	/** Mixing coefficients in Q10 fixed point format */
 	int16_t coeffs[SEL_SINK_CHANNELS_MAX][SEL_SOURCE_CHANNELS_MAX];
@@ -108,7 +116,9 @@ typedef void (*sel_func)(struct comp_dev *dev, struct audio_stream *sink,
 struct comp_data {
 #if CONFIG_IPC_MAJOR_4
 	struct sof_selector_ipc4_config sel_ipc4_cfg;
-	struct ipc4_selector_coeffs_config coeffs_config;
+	struct ipc4_selector_coeffs_config *coeffs_config;
+	struct ipc4_selector_coeffs_config *multi_coeffs_config;
+	size_t multi_coeffs_config_size;
 #endif
 
 	uint32_t source_period_bytes;	/**< source number of period bytes */
@@ -117,6 +127,8 @@ struct comp_data {
 	enum sof_ipc_frame sink_format;		/**< sink frame format */
 	struct sof_sel_config config;	/**< component configuration data */
 	sel_func sel_func;	/**< channel selector processing function */
+	int num_configs;	/**< two or more if multiple mix blobs received */
+	bool passthrough;	/**< Use a passthrough copy function when no up/down mix */
 };
 
 /** \brief Selector processing functions map. */
diff --git a/tools/topology/topology2/include/components/micsel/downmix_51_to_mono.conf b/tools/topology/topology2/include/components/micsel/downmix_51_to_mono.conf
deleted file mode 100644
index cd1f65b86454..000000000000
--- a/tools/topology/topology2/include/components/micsel/downmix_51_to_mono.conf
+++ /dev/null
@@ -1,26 +0,0 @@
-# Exported with script sof_selector_blobs.m 04-Jun-2025
-# cd tools/tune/selector; octave sof_selector_blobs.m
-Object.Base.data."selector_config" {
-	bytes "
-		0x53,0x4f,0x46,0x34,0x00,0x00,0x00,0x00,
-		0x84,0x00,0x00,0x00,0x01,0xd0,0x01,0x03,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0xd4,0x00,0xd4,0x00,
-		0x2c,0x01,0x00,0x00,0x96,0x00,0x96,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00"
-}
diff --git a/tools/topology/topology2/include/components/micsel/downmix_51_to_stereo.conf b/tools/topology/topology2/include/components/micsel/downmix_51_to_stereo.conf
deleted file mode 100644
index 3f7b32a251d8..000000000000
--- a/tools/topology/topology2/include/components/micsel/downmix_51_to_stereo.conf
+++ /dev/null
@@ -1,26 +0,0 @@
-# Exported with script sof_selector_blobs.m 04-Jun-2025
-# cd tools/tune/selector; octave sof_selector_blobs.m
-Object.Base.data."selector_config" {
-	bytes "
-		0x53,0x4f,0x46,0x34,0x00,0x00,0x00,0x00,
-		0x84,0x00,0x00,0x00,0x01,0xd0,0x01,0x03,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0xa8,0x01,0x00,0x00,
-		0x2c,0x01,0x00,0x00,0x2c,0x01,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0xa8,0x01,
-		0x2c,0x01,0x00,0x00,0x00,0x00,0x2c,0x01,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00"
-}
diff --git a/tools/topology/topology2/include/components/micsel/downmix_71_to_mono.conf b/tools/topology/topology2/include/components/micsel/downmix_71_to_mono.conf
deleted file mode 100644
index 1e67d36bf839..000000000000
--- a/tools/topology/topology2/include/components/micsel/downmix_71_to_mono.conf
+++ /dev/null
@@ -1,26 +0,0 @@
-# Exported with script sof_selector_blobs.m 04-Jun-2025
-# cd tools/tune/selector; octave sof_selector_blobs.m
-Object.Base.data."selector_config" {
-	bytes "
-		0x53,0x4f,0x46,0x34,0x00,0x00,0x00,0x00,
-		0x84,0x00,0x00,0x00,0x01,0xd0,0x01,0x03,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0xa4,0x00,0xa4,0x00,
-		0xe8,0x00,0x00,0x00,0x74,0x00,0x74,0x00,
-		0x74,0x00,0x74,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00"
-}
diff --git a/tools/topology/topology2/include/components/micsel/downmix_71_to_stereo.conf b/tools/topology/topology2/include/components/micsel/downmix_71_to_stereo.conf
deleted file mode 100644
index df6af38dde34..000000000000
--- a/tools/topology/topology2/include/components/micsel/downmix_71_to_stereo.conf
+++ /dev/null
@@ -1,26 +0,0 @@
-# Exported with script sof_selector_blobs.m 04-Jun-2025
-# cd tools/tune/selector; octave sof_selector_blobs.m
-Object.Base.data."selector_config" {
-	bytes "
-		0x53,0x4f,0x46,0x34,0x00,0x00,0x00,0x00,
-		0x84,0x00,0x00,0x00,0x01,0xd0,0x01,0x03,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x48,0x01,0x00,0x00,
-		0xe8,0x00,0x00,0x00,0xe8,0x00,0x00,0x00,
-		0xe8,0x00,0x00,0x00,0x00,0x00,0x48,0x01,
-		0xe8,0x00,0x00,0x00,0x00,0x00,0xe8,0x00,
-		0x00,0x00,0xe8,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-		0x00,0x00,0x00,0x00"
-}
diff --git a/tools/topology/topology2/include/components/micsel/stereo_endpoint_playback_updownmix.conf b/tools/topology/topology2/include/components/micsel/stereo_endpoint_playback_updownmix.conf
new file mode 100644
index 000000000000..70500ef0e0fa
--- /dev/null
+++ b/tools/topology/topology2/include/components/micsel/stereo_endpoint_playback_updownmix.conf
@@ -0,0 +1,75 @@
+# Exported with script sof_selector_blobs.m 10-Mar-2026
+# cd tools/tune/selector; octave sof_selector_blobs.m
+Object.Base.data."selector_config" {
+	bytes "
+		0x53,0x4f,0x46,0x34,0x00,0x00,0x00,0x00,
+		0x10,0x02,0x00,0x00,0x01,0xd0,0x01,0x03,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x08,0x08,0x0c,0x0c,0x00,0x04,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x04,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x04,0x01,0x02,0x00,0x01,
+		0xd5,0x02,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0xd5,0x02,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x06,0x02,0x08,0x01,0x00,0x01,0x00,0x00,
+		0xb5,0x00,0x96,0x01,0xb5,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
+		0xb5,0x00,0x96,0x01,0x00,0x00,0xb5,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x08,0x02,0x0c,0x01,
+		0xda,0x00,0x00,0x00,0x9a,0x00,0x59,0x01,
+		0x9a,0x00,0x00,0x00,0x9a,0x00,0x00,0x00,
+		0x00,0x00,0xda,0x00,0x9a,0x00,0x59,0x01,
+		0x00,0x00,0x9a,0x00,0x00,0x00,0x9a,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00"
+}