diff --git a/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_pcb b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_pcb
new file mode 100644
index 0000000..28b47a1
--- /dev/null
+++ b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_pcb
@@ -0,0 +1,2 @@
+(kicad_pcb (version 20211014) (generator pcbnew)
+)
\ No newline at end of file
diff --git a/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_prl b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_prl
new file mode 100644
index 0000000..9e7cff2
--- /dev/null
+++ b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_prl
@@ -0,0 +1,75 @@
+{
+  "board": {
+    "active_layer": 0,
+    "active_layer_preset": "",
+    "auto_track_width": true,
+    "hidden_nets": [],
+    "high_contrast_mode": 0,
+    "net_color_mode": 1,
+    "opacity": {
+      "pads": 1.0,
+      "tracks": 1.0,
+      "vias": 1.0,
+      "zones": 0.6
+    },
+    "ratsnest_display_mode": 0,
+    "selection_filter": {
+      "dimensions": true,
+      "footprints": true,
+      "graphics": true,
+      "keepouts": true,
+      "lockedItems": true,
+      "otherItems": true,
+      "pads": true,
+      "text": true,
+      "tracks": true,
+      "vias": true,
+      "zones": true
+    },
+    "visible_items": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      8,
+      9,
+      10,
+      11,
+      12,
+      13,
+      14,
+      15,
+      16,
+      17,
+      18,
+      19,
+      20,
+      21,
+      22,
+      23,
+      24,
+      25,
+      26,
+      27,
+      28,
+      29,
+      30,
+      32,
+      33,
+      34,
+      35,
+      36
+    ],
+    "visible_layers": "fffffff_ffffffff",
+    "zone_display_mode": 0
+  },
+  "meta": {
+    "filename": "mfos_mixer_speaker.kicad_prl",
+    "version": 3
+  },
+  "project": {
+    "files": []
+  }
+}
diff --git a/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_pro b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_pro
new file mode 100644
index 0000000..0e55672
--- /dev/null
+++ b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_pro
@@ -0,0 +1,326 @@
+{
+  "board": {
+    "design_settings": {
+      "defaults": {
+        "board_outline_line_width": 0.1,
+        "copper_line_width": 0.2,
+        "copper_text_size_h": 1.5,
+        "copper_text_size_v": 1.5,
+        "copper_text_thickness": 0.3,
+        "other_line_width": 0.15,
+        "silk_line_width": 0.15,
+        "silk_text_size_h": 1.0,
+        "silk_text_size_v": 1.0,
+        "silk_text_thickness": 0.15
+      },
+      "diff_pair_dimensions": [],
+      "drc_exclusions": [],
+      "rules": {
+        "min_copper_edge_clearance": 0.0,
+        "solder_mask_clearance": 0.0,
+        "solder_mask_min_width": 0.0
+      },
+      "track_widths": [],
+      "via_dimensions": []
+    },
+    "layer_presets": []
+  },
+  "boards": [],
+  "cvpcb": {
+    "equivalence_files": []
+  },
+  "erc": {
+    "erc_exclusions": [],
+    "meta": {
+      "version": 0
+    },
+    "pin_map": [
+      [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
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+        1,
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+        2,
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+        1,
+        1,
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+        1,
+        1,
+        1,
+        1,
+        2
+      ],
+      [
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+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        0,
+        0,
+        0,
+        2
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+      [
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+        2,
+        1,
+        2,
+        0,
+        0,
+        1,
+        0,
+        2,
+        2,
+        2,
+        2
+      ],
+      [
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+        2,
+        0,
+        1,
+        0,
+        0,
+        1,
+        0,
+        2,
+        0,
+        0,
+        2
+      ],
+      [
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+        2,
+        1,
+        1,
+        0,
+        0,
+        1,
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+        2,
+        0,
+        0,
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+      ],
+      [
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+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2,
+        2
+      ]
+    ],
+    "rule_severities": {
+      "bus_definition_conflict": "error",
+      "bus_entry_needed": "error",
+      "bus_label_syntax": "error",
+      "bus_to_bus_conflict": "error",
+      "bus_to_net_conflict": "error",
+      "different_unit_footprint": "error",
+      "different_unit_net": "error",
+      "duplicate_reference": "error",
+      "duplicate_sheet_names": "error",
+      "extra_units": "error",
+      "global_label_dangling": "warning",
+      "hier_label_mismatch": "error",
+      "label_dangling": "error",
+      "lib_symbol_issues": "warning",
+      "multiple_net_names": "warning",
+      "net_not_bus_member": "warning",
+      "no_connect_connected": "warning",
+      "no_connect_dangling": "warning",
+      "pin_not_connected": "error",
+      "pin_not_driven": "error",
+      "pin_to_pin": "warning",
+      "power_pin_not_driven": "error",
+      "similar_labels": "warning",
+      "unannotated": "error",
+      "unit_value_mismatch": "error",
+      "unresolved_variable": "error",
+      "wire_dangling": "error"
+    }
+  },
+  "libraries": {
+    "pinned_footprint_libs": [],
+    "pinned_symbol_libs": []
+  },
+  "meta": {
+    "filename": "mfos_mixer_speaker.kicad_pro",
+    "version": 1
+  },
+  "net_settings": {
+    "classes": [
+      {
+        "bus_width": 12.0,
+        "clearance": 0.2,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "Default",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.25,
+        "via_diameter": 0.8,
+        "via_drill": 0.4,
+        "wire_width": 6.0
+      }
+    ],
+    "meta": {
+      "version": 2
+    },
+    "net_colors": null
+  },
+  "pcbnew": {
+    "last_paths": {
+      "gencad": "",
+      "idf": "",
+      "netlist": "",
+      "specctra_dsn": "",
+      "step": "",
+      "vrml": ""
+    },
+    "page_layout_descr_file": ""
+  },
+  "schematic": {
+    "annotate_start_num": 0,
+    "drawing": {
+      "default_line_thickness": 6.0,
+      "default_text_size": 50.0,
+      "field_names": [],
+      "intersheets_ref_own_page": false,
+      "intersheets_ref_prefix": "",
+      "intersheets_ref_short": false,
+      "intersheets_ref_show": false,
+      "intersheets_ref_suffix": "",
+      "junction_size_choice": 3,
+      "label_size_ratio": 0.375,
+      "pin_symbol_size": 25.0,
+      "text_offset_ratio": 0.15
+    },
+    "legacy_lib_dir": "",
+    "legacy_lib_list": [],
+    "meta": {
+      "version": 1
+    },
+    "net_format_name": "",
+    "ngspice": {
+      "fix_include_paths": true,
+      "fix_passive_vals": false,
+      "meta": {
+        "version": 0
+      },
+      "model_mode": 0,
+      "workbook_filename": ""
+    },
+    "page_layout_descr_file": "",
+    "plot_directory": "",
+    "spice_adjust_passive_values": false,
+    "spice_external_command": "spice \"%I\"",
+    "subpart_first_id": 65,
+    "subpart_id_separator": 0
+  },
+  "sheets": [
+    [
+      "66bfc55f-2134-4b42-be42-0cf2bf2e8ff6",
+      ""
+    ]
+  ],
+  "text_variables": {}
+}
diff --git a/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_sch b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_sch
new file mode 100644
index 0000000..3173b86
--- /dev/null
+++ b/mfos_mixer_speaker/kicad/mfos_mixer_speaker/mfos_mixer_speaker.kicad_sch
@@ -0,0 +1,1627 @@
+(kicad_sch (version 20211123) (generator eeschema)
+
+  (uuid 66bfc55f-2134-4b42-be42-0cf2bf2e8ff6)
+
+  (paper "A4")
+
+  (lib_symbols
+    (symbol "Amplifier_Audio:LM386" (pin_names (offset 0.127)) (in_bom yes) (on_board yes)
+      (property "Reference" "U" (id 0) (at 1.27 7.62 0)
+        (effects (font (size 1.27 1.27)) (justify left))
+      )
+      (property "Value" "LM386" (id 1) (at 1.27 5.08 0)
+        (effects (font (size 1.27 1.27)) (justify left))
+      )
+      (property "Footprint" "" (id 2) (at 2.54 2.54 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "http://www.ti.com/lit/ds/symlink/lm386.pdf" (id 3) (at 5.08 5.08 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "single Power opamp" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Low Voltage Audio Power Amplifier, DIP-8/SOIC-8/SSOP-8" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_fp_filters" "SOIC*3.9x4.9mm*P1.27mm* DIP*W7.62mm* MSSOP*P0.65mm* TSSOP*3x3mm*P0.5mm*" (id 6) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "LM386_0_1"
+        (polyline
+          (pts
+            (xy 5.08 0)
+            (xy -5.08 5.08)
+            (xy -5.08 -5.08)
+            (xy 5.08 0)
+          )
+          (stroke (width 0.254) (type default) (color 0 0 0 0))
+          (fill (type background))
+        )
+      )
+      (symbol "LM386_1_1"
+        (pin input line (at 0 -7.62 90) (length 5.08)
+          (name "GAIN" (effects (font (size 0.508 0.508))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+        (pin input line (at -7.62 -2.54 0) (length 2.54)
+          (name "-" (effects (font (size 1.27 1.27))))
+          (number "2" (effects (font (size 1.27 1.27))))
+        )
+        (pin input line (at -7.62 2.54 0) (length 2.54)
+          (name "+" (effects (font (size 1.27 1.27))))
+          (number "3" (effects (font (size 1.27 1.27))))
+        )
+        (pin power_in line (at -2.54 -7.62 90) (length 3.81)
+          (name "GND" (effects (font (size 1.27 1.27))))
+          (number "4" (effects (font (size 1.27 1.27))))
+        )
+        (pin output line (at 7.62 0 180) (length 2.54)
+          (name "~" (effects (font (size 1.27 1.27))))
+          (number "5" (effects (font (size 1.27 1.27))))
+        )
+        (pin power_in line (at -2.54 7.62 270) (length 3.81)
+          (name "V+" (effects (font (size 1.27 1.27))))
+          (number "6" (effects (font (size 1.27 1.27))))
+        )
+        (pin input line (at 0 7.62 270) (length 5.08)
+          (name "BYPASS" (effects (font (size 0.508 0.508))))
+          (number "7" (effects (font (size 1.27 1.27))))
+        )
+        (pin input line (at 2.54 -7.62 90) (length 6.35)
+          (name "GAIN" (effects (font (size 0.508 0.508))))
+          (number "8" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
+    (symbol "Connector:Jack-DC" (pin_names (offset 1.016)) (in_bom yes) (on_board yes)
+      (property "Reference" "J" (id 0) (at 0 5.334 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Value" "Jack-DC" (id 1) (at 0 -5.08 0)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at 1.27 -1.016 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "~" (id 3) (at 1.27 -1.016 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "DC power barrel jack connector" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "DC Barrel Jack" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_fp_filters" "BarrelJack*" (id 6) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "Jack-DC_0_1"
+        (rectangle (start -5.08 3.81) (end 5.08 -3.81)
+          (stroke (width 0.254) (type default) (color 0 0 0 0))
+          (fill (type background))
+        )
+        (arc (start -3.302 3.175) (mid -3.937 2.54) (end -3.302 1.905)
+          (stroke (width 0.254) (type default) (color 0 0 0 0))
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+        )
+        (arc (start -3.302 3.175) (mid -3.937 2.54) (end -3.302 1.905)
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+          (fill (type outline))
+        )
+        (polyline
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+            (xy 3.81 2.54)
+          )
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+          (fill (type none))
+        )
+        (polyline
+          (pts
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+        (rectangle (start 3.683 3.175) (end -3.302 1.905)
+          (stroke (width 0.254) (type default) (color 0 0 0 0))
+          (fill (type outline))
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+      (symbol "Jack-DC_1_1"
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+          (number "1" (effects (font (size 1.27 1.27))))
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+          (number "2" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
+    (symbol "Device:Battery" (pin_numbers hide) (pin_names (offset 0) hide) (in_bom yes) (on_board yes)
+      (property "Reference" "BT" (id 0) (at 2.54 2.54 0)
+        (effects (font (size 1.27 1.27)) (justify left))
+      )
+      (property "Value" "Battery" (id 1) (at 2.54 0 0)
+        (effects (font (size 1.27 1.27)) (justify left))
+      )
+      (property "Footprint" "" (id 2) (at 0 1.524 90)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "~" (id 3) (at 0 1.524 90)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "batt voltage-source cell" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Multiple-cell battery" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "Battery_0_1"
+        (rectangle (start -2.032 -1.397) (end 2.032 -1.651)
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type outline))
+        )
+        (rectangle (start -2.032 1.778) (end 2.032 1.524)
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type outline))
+        )
+        (rectangle (start -1.3208 -1.9812) (end 1.27 -2.4892)
+          (stroke (width 0) (type default) (color 0 0 0 0))
+          (fill (type outline))
+        )
+        (rectangle (start -1.3208 1.1938) (end 1.27 0.6858)
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+          (fill (type outline))
+        )
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+          (pts
+            (xy 0 -1.524)
+            (xy 0 -1.27)
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+          (stroke (width 0) (type default) (color 0 0 0 0))
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+        (pin passive line (at 0 5.08 270) (length 2.54)
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+          (number "2" (effects (font (size 1.27 1.27))))
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+    (symbol "Device:C_Polarized_Small" (pin_numbers hide) (pin_names (offset 0.254) hide) (in_bom yes) (on_board yes)
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+      )
+      (property "ki_keywords" "cap capacitor" (id 4) (at 0 0 0)
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