Qty,Refs,Value,Footprint,Manufacturer,MPN,Populate,Notes
30,C6 C23 C24 C25 C26 C27 C28 C29 C30 C31 C34 C35 C38 C39 C41 C42 C43 C44 C45 C52 C53 C54 C55 C57 C58 C59 C60 C61 C62 C64,100nF,Capacitor_SMD:C_0402_1005Metric,,,,
12,R7 R9 R13 R23 R27 R28 R29 R35 R37 R44 R48 R49,10k,Resistor_SMD:R_0402_1005Metric,,,,
9,C12 C15 C18 C19 C20 C49 C63 C65 C66,1uF,Capacitor_SMD:C_0402_1005Metric,,,,
7,D3 D4 D5 D6 D7 D8 D11,1N4148WS,Diode_SMD:D_SOD-323,onsemi,1N4148WS,,fast diode (input clamps / MIDI protect)
6,R2 R5 R42 R45 R46 R50,100k,Resistor_SMD:R_0402_1005Metric,,,,
5,R10 R38 R39 R40 R41,33,Resistor_SMD:R_0402_1005Metric,,,,
4,C11 C14 C17 C56,10nF,Capacitor_SMD:C_0402_1005Metric,,,,
4,R17 R19 R20 R43,1Meg,Resistor_SMD:R_0402_1005Metric,,,,
4,R12 R16 R18 R22,1k,Resistor_SMD:R_0402_1005Metric,,,,
4,C13 C16 C47 C48,2.2uF,Capacitor_SMD:C_0402_1005Metric,,,,
4,C2 C3 C21 C22,4.7uF,Capacitor_SMD:C_0402_1005Metric,,,,
4,D9 D10 D12 D13,BAT54,Diode_SMD:D_SOD-323,onsemi,BAT54,,Schottky (RTC diode-OR / peak-detect)
3,K1 K2 K3,TQ2SA-5V,Relay_SMD:Relay_DPDT_Panasonic_TQ2-SA,Panasonic,TQ2SA-5V,,"DPDT signal relay, gold; K1 select/K2 mute/K3 gnd-lift"
2,R25 R26,1.5k,Resistor_SMD:R_0402_1005Metric,,,,
2,R3 R32,100,Resistor_SMD:R_0402_1005Metric,,,,
2,C1 C46,10uF,Capacitor_SMD:C_1206_3216Metric,,,,
2,C32 C33,15pF,Capacitor_SMD:C_0402_1005Metric,,,,
2,C36 C37,2.2uF,Capacitor_SMD:C_1206_3216Metric,,,,
2,C4 C7,22uF,Capacitor_SMD:C_1206_3216Metric,,,,
2,R14 R15,27,Resistor_SMD:R_0402_1005Metric,,,,
2,R33 R34,4.7k,Resistor_SMD:R_0402_1005Metric,,,,
2,L2 L3,4.7uH,Inductor_SMD:L_0806_2016Metric,Wurth/EPCOS,7447789004 / B82462-G4472,,switcher inductor
2,R30 R31,47,Resistor_SMD:R_0402_1005Metric,,,,
2,R52 R53,5.1k,Resistor_SMD:R_0402_1005Metric,,,,
2,R47 R51,68k,Resistor_SMD:R_0402_1005Metric,,,,
2,D1 D2,MBRM120,Diode_SMD:D_SOD-323,onsemi,MBRM120ET3G,,Schottky rectifier (switcher)
2,SW1 SW2,SW_Push,Button_Switch_SMD:SW_SPST_SKQG_WithStem,,,,
1,R11,0,Resistor_SMD:R_0402_1005Metric,,,,
1,R1,1.4M,Resistor_SMD:R_0402_1005Metric,,,,
1,R4,1.5M,Resistor_SMD:R_0402_1005Metric,,,,
1,C40,100nF,Capacitor_SMD:C_1206_3216Metric,,,,
1,RV1,10k,Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical,Bourns,3296W-1-103LF,,output level cal trim (25-turn)
1,R6,116k,Resistor_SMD:R_0402_1005Metric,,,,
1,R8,117k,Resistor_SMD:R_0402_1005Metric,,,,
1,Y1,12MHz,Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm,Abracon,ABM8-272-12.000MHZ-T3,,RP2350 crystal; confirm load caps
1,C51,1nF,Capacitor_SMD:C_0402_1005Metric,,,,
1,R24,2.2k,Resistor_SMD:R_0402_1005Metric,,,,
1,C50,2.2nF,Capacitor_SMD:C_0402_1005Metric,,,,
1,R36,220,Resistor_SMD:R_0402_1005Metric,,,,
1,C9,220nF,Capacitor_SMD:C_0402_1005Metric,,,,
1,L4,3.3uH,Inductor_SMD:L_0806_2016Metric,Abracon,AOTA-B201610S3R3-101-T,,RP2350 core SMPS inductor
1,R21,3k,Resistor_SMD:R_0402_1005Metric,,,,
1,C10,4.7nF,Capacitor_SMD:C_0402_1005Metric,,,,
1,C5,6.8pF,Capacitor_SMD:C_0402_1005Metric,,,,
1,L1,600R,Inductor_SMD:L_0806_2016Metric,Murata,BLM18KG..,,ferrite bead (USB VBUS input)
1,C8,7.5pF,Capacitor_SMD:C_0402_1005Metric,,,,
1,U4,AP2112K-3.3,Package_TO_SOT_SMD:SOT-23-5,Diodes,AP2112K-3.3TRG1,,3V3 LDO; confirm SOT-23-5 pinout
1,BT1,CR2032,Battery:BatteryHolder_Keystone_1066_1x2032,Keystone,1066,,coin-cell holder (RTC backup)
1,J1,Conn_01x04,Connector_PinHeader_1.27mm:PinHeader_1x04_P1.27mm_Vertical,,,,
1,J4,Conn_01x08,Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical,,,,
1,J3,Conn_02x05_Odd_Even,Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical,,,,
1,J2,Conn_02x13_Odd_Even,Connector_PinHeader_2.54mm:PinHeader_2x13_P2.54mm_Vertical,,,,
1,U10,OPA1612,Package_SO:SOIC-8_3.9x4.9mm_P1.27mm,TI,OPA1612AIDR,,dual: recon filter + summer
1,U8,OPA1641,Package_SO:SOIC-8_3.9x4.9mm_P1.27mm,TI,OPA1641AID,,JFET Hi-Z DI buffer
1,U9,PCM5102A,Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm,TI,PCM5102APWR,,I2S DAC; SCK->GND (MCLK-less)
1,U5,RP2350A,Package_DFN_QFN:QFN-60-1EP_7x7mm_P0.4mm_EP3.6x3.6mm,Raspberry Pi,RP2350A,,MCU (QFN-60); via KiCad lib symbol
1,U13,RV-8803-C7,RTC_MicroCrystal:RV-8803-C7,Micro Crystal,RV-8803-C7,,I2C RTC; confirm footprint
1,U7,THAT1240,Package_SO:SOIC-8_3.9x4.9mm_P1.27mm,THAT Corp,THAT1240S08-U,,0dB balanced line receiver; 2nd-src INA134/SSM2141
1,U11,THAT1646,Package_SO:SOIC-8_3.9x4.9mm_P1.27mm,THAT Corp,THAT1646S08-U,,"balanced line driver, +6dB; 2nd-src DRV134/SSM2142"
1,U1,TPS65131,Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm,TI,TPS65131RGER,,dual boost/inverter -> +/-18V
1,U3,TPS7A3001,Package_SO:HVSSOP-8-1EP_3x3mm_P0.65mm,TI,TPS7A3001DGNR,,-15V ultra-low-noise LDO; confirm Vfb
1,U2,TPS7A4901,Package_SO:HVSSOP-8-1EP_3x3mm_P0.65mm,TI,TPS7A4901DGNR,,+15V ultra-low-noise LDO; confirm Vfb
1,U12,ULN2003A,Package_SO:SOIC-16_3.9x9.9mm_P1.27mm,TI,ULN2003ADR,,shared relay driver (3 of 7 ch used)
1,U18,USBLC6-2SC6,Package_TO_SOT_SMD:SOT-23-6,STMicro,USBLC6-2SC6,,USB ESD
1,J5,USB_C_Receptacle,Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12,GCT,USB4085-GF-A,,USB-C; 24-pin sym vs 16-pin part - resolve at layout
1,U6,W25Q128JVS,Package_SO:SOIC-8_5.23x5.23mm_P1.27mm,Winbond,W25Q128JVSIQ,,16MB QSPI flash
1,U15,74LVC14,Package_SO:TSSOP-14_4.4x5mm_P0.65mm,Nexperia,74LVC14APW,DNP,DNP - MIDI OUT/THRU buffer
1,U14,H11L1,Package_DIP:DIP-6_W7.62mm,Vishay,H11L1M,DNP,DNP - MIDI opto IN; confirm pinout
1,U16,LM393,Package_SO:SOIC-8_3.9x4.9mm_P1.27mm,TI,LM393DR,DNP,DNP - SIG/CLIP comparator
1,U17,PAM8302A,Package_SO:SOIC-8_3.9x4.9mm_P1.27mm,Diodes,PAM8302AASCR,DNP,DNP - monitor speaker amp
