Preamp Board

colektamu·ECEN404-2026SP-TIAmplifier·Cole - Pre and power Amp/preamp_v2/preamp_v2.kicad_pcb

About the Preamp Board

Preamp Board is an open source PCB design by colektamu, published on GitHub. It is a 2-layer board measuring 40 × 70 mm, with 38 components from 22 distinct parts.

Other key parts include the OPA1656ID. By type, the board carries 16 resistors, 13 capacitors, 3 connectors, 2 ICs and 1 diode.

From the project

Files from 403 and 404

Main components on the Preamp Board

OPA1656ID

Preamp Board bill of materials (BOM)

38 components, 22 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
2	OPA1656ID	SOIC-8_3.9x4.9mm_P1.27mm	U1, U2
2	AUDIOJACK3_GROUND RCJ-017	CUI_RCJ-017	J1, J3
1	CONN_01X02 Conn_01x02	691137710002	J2
3	10K 10k	Potentiometer_Alps_RK163_Single_Horizontal	RV1, RV2, RV3
1	1N5817	D_DO-41_SOD81_P10.16mm_Horizontal	D1
2	2.2μF	C_Rect_L19.0mm_W5.0mm_P15.00mm_MKS4	C1, C13
1	100NF 100nF	C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2	C2
1	2.2NF 2.2nF	C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2	C3
1	22PF 22pF	C_Disc_D3.0mm_W1.6mm_P2.50mm	C4
3	10μF	CP_Radial_D5.0mm_P2.00mm	C5, C7, C10
3	0.1μF	C_Disc_D3.0mm_W1.6mm_P2.50mm	C6, C8, C9
1	15NF 15nF	C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2	C11
1	22NF 22nF	C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2	C12
2	100K 100k	R_1206_3216Metric	R1, R2
2	5k	R_1206_3216Metric	R3, R7
2	2.8K 2.8k	R_1206_3216Metric	R4, R8
1	22K 22k	R_1206_3216Metric	R5
1	4.7K 4.7k	R_1206_3216Metric	R6
4	47K 47k	R_1206_3216Metric	R9, R10, R12, R14
2	3.6K 3.6k	R_1206_3216Metric	R11, R13

Show 2 more

Qty	Part	Footprint	Refs
1	15K 15k	R_1206_3216Metric	R15
1	10K 10k	R_1206_3216Metric	R18

Preamp Board design files

The KiCad project lives in the colektamu/ECEN404-2026SP-TIAmplifier repository on GitHub; these links point at the commit this page was built from.

Preamp Board: common questions

How big is the Preamp Board?

The Preamp Board measures 40 × 70 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Preamp Board?

38 components, from 22 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Preamp Board design files?

From the colektamu/ECEN404-2026SP-TIAmplifier repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.