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HighZ-stereo

Supermagnum·HighZ-stereo

HighZ-stereo PCB layout, top view — open source board by Supermagnum
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About the HighZ-stereo PCB

HighZ-stereo is an open source PCB design by Supermagnum, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 62.5 × 97.5 mm, with 69 components from 19 distinct parts.

Other key parts include the OPA1679. By type, the board carries 28 resistors, 22 capacitors, 10 diodes, 8 connectors and 1 IC.

It belongs with the audio designs in this gallery.

From the project

Stereo High Z amplifier for dual balanced piezoelectric crystals.

A small PCB that uses a OPA1679 op amp to amplify a signal from piezolectric crystals.

It has balanced output,input and should run on +48 phantom power. Shielded cable must be used for connection to the piezo crystals. Please use 0,5 W metal film resistors with 1% tolerance or better and audio quality capacitors. Polypropylene (PP) capacitators is good, electrolytes if needed.

Main components on the HighZ-stereo

OPA1679

HighZ-stereo bill of materials (BOM)

69 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
OPA1679
OPA1679IDR
U2
4
XLR3
J2, J4, J15, J21
2
Potmeter ground A
J3, J14
2
potmeter ground B
J6, J13
2
ZPD11
ZPD11
D1, D10
8
1N4148
1N4148
D2, D3, D4, D5, D6, D7, D8, D9
2
0.1UF
0.1uF
TAP104K050SCS
C1, C13
8
10UF
10uF
B32522C0106K000
C2, C4, C5, C8, C11, C16, C19, C20
2
33UF
33uF
860010672011
C3, C23
4
47PF
47pF
FKP2O100471D00KSSD
C6, C9, C14, C17
4
47UF
47uF
ECA-2AM470BJ
C7, C10, C12, C15
2
680PF
680pF
FKP2D006801D00KSSD
C21, C22
6
100
YR1B100RCC
R1, R9, R12, R18, R20, R23
4
56K
RNMF14FTC56K0
R2, R10, R16, R17
4
1G
RGP0207CHK1G0
R3, R4, R14, R15
4
4.7K
RNMF14FTC4K70
R5, R6, R25, R26
4
470
MFR-25FTE52-470R
R7, R8, R22, R24
4
4K
RN60D4001FRE6
R11, R13, R19, R21
2
150
RNF14FTD150R
R27, R28

HighZ-stereo design files

The KiCad project lives in the Supermagnum/HighZ-stereo repository on GitHub; these links point at the commit this page was built from.

HighZ-stereo: common questions

How big is the HighZ-stereo PCB?

The HighZ-stereo measures 62.5 × 97.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the HighZ-stereo?

69 components, from 19 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 HighZ-stereo design files?

From the Supermagnum/HighZ-stereo repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the HighZ-stereo design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which Supermagnum chose for the repository.

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