# Doepfer A-137-1

drillable.com › eurorack › makers › doepfer-de › a-137-1.
As of the capture of 9 Sep 2026; the index built 18 Sep 2026, 23:02 UTC · [cites, never asserts](/standing).
Source: https://doepfer.de/a100_man/A137_man.pdf and https://doepfer.de/A137.htm · quotes only, no licence recorded.
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## Records read from it (17)

By drillable.com ([llm-extract/3](/standing#methods)); scored precision 1.00, recall 0.36 on the harness's last sample of 50; drillable.com ([llm-extract/1](/standing#methods)); scored precision 1.00, recall 0.41 on the harness's last sample of 44.

### [a 137 1](/eurorack/makers/doepfer-de/a-137-1) (10 records)

- **type** = Voltage Controlled Waveform Multiplier · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9?trace&start=67&end=124) · [sha256:7083a72543f0a348…](/hashes/sha256:7083a72543f0a348a75cefc5ffe8ec96789e472caaa16805007018f475a4b287)
- **architecture** = standard linear VCA and 4 wave folding stages · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9?trace&start=1378&end=1463) · [sha256:71f515ce1c61f59b…](/hashes/sha256:71f515ce1c61f59bfca28bc25eade253301d6fc15733cd236540704cf49cb122)
- **max-length** = 9 · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9?trace&start=3222&end=3280) · [sha256:4686ad1b2034c1bb…](/hashes/sha256:4686ad1b2034c1bbbbabcca452f3ac4026d8691f0e42b52f961715d05b7001de)
- **control** = LFO, ADSR, random voltage, MIDI-to-CV, Theremin, ribbon controller, joy stick, foot controller · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9?trace&start=3829&end=4033) · [sha256:0aa307cd2dfb990d…](/hashes/sha256:0aa307cd2dfb990dfe547d2280fa22ca64e89f9ce522eee7f3307b73b5c8c080)
- **range** = 1 to 9 · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9?trace&start=5174&end=5250) · [sha256:cb056dde801e0f97…](/hashes/sha256:cb056dde801e0f97ee898be32b768848e99419037ad1167ec0b805d33f618c77)
- **module-type** = voltage controlled Wave Multiplier · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=4077&end=4123) · [sha256:badb4afc9c608bcf…](/hashes/sha256:badb4afc9c608bcfb1f74a3adc56f7e1abb6866cf8c34488b3823c56631bae85)
- **working-principle** = inverse low pass filter · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=4485&end=4661) · [sha256:167078220c84dc3c…](/hashes/sha256:167078220c84dc3cda8c68fa88fd024dea0fae07181aa0967cfc296f4afd4bbd)
- **effect-on-rectangle-signals** = none or only little effects · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=5067&end=5130) · [sha256:4da2206c242da6a8…](/hashes/sha256:4da2206c242da6a8cd5ac6f6261f486c937e939a6a6b086631c3d93ec2859dcc)
- **coupling** = fully DC coupled · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=6587&end=6678) · [sha256:308f17fbfa0fa1e8…](/hashes/sha256:308f17fbfa0fa1e85c4b06c2b3fec32a3c8c19c74606213cf278c2e161a38847)
- **current-draw-positive** = 40 mA · per https://drillable.com · as [a 137 1 · a 137 1](/eurorack/makers/doepfer-de/a-137-1) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=12625&end=12673) · [sha256:85df102287e56988…](/hashes/sha256:85df102287e56988c477883230027956823732c1c8704703df31b519811f25fb)

### [audio in](/eurorack/makers/doepfer-de/a-137-1/audio-in) (1 record)

- **suitability** = also suitable for control signals · per https://drillable.com · as [a 137 1 · audio in](/eurorack/makers/doepfer-de/a-137-1/audio-in) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=5893&end=5937) · [sha256:ac7c4c05e2f6378d…](/hashes/sha256:ac7c4c05e2f6378df261eadddee47d4381b5f43a31f4ded2008b51d434971c09)

### [audio out](/eurorack/makers/doepfer-de/a-137-1/audio-out) (1 record)

- **compatibility** = output signal can be processed by other A-100 modules like filters, VCAs, phaser, reverb or a second A-137 · per https://drillable.com · as [a 137 1 · audio out](/eurorack/makers/doepfer-de/a-137-1/audio-out) · [quote](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9?trace&start=7389&end=7500) · [sha256:813404a3224e212c…](/hashes/sha256:813404a3224e212cb0a2203bd874461f87873c255c54790b69babc903d0899d8)

### [folding level cv in](/eurorack/makers/doepfer-de/a-137-1/folding-level-cv-in) (1 record)

- **attenuator** = with attenuator · per https://drillable.com · as [a 137 1 · folding level cv in](/eurorack/makers/doepfer-de/a-137-1/folding-level-cv-in) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=6009&end=6046) · [sha256:f538242ac557893f…](/hashes/sha256:f538242ac557893fd025c11bd139942d09b69afd339fd4611e24026fb58caaab)

### [harmonics cv in](/eurorack/makers/doepfer-de/a-137-1/harmonics-cv-in) (1 record)

- **attenuator** = with attenuator · per https://drillable.com · as [a 137 1 · harmonics cv in](/eurorack/makers/doepfer-de/a-137-1/harmonics-cv-in) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=5974&end=6007) · [sha256:384b6431503ce936…](/hashes/sha256:384b6431503ce9368a791899cf220e72ab95bccb6c333bbbb5c4404c7e2cda39)

### [level control](/eurorack/makers/doepfer-de/a-137-1/level-control) (1 record)

- **function** = same effect as the Multiples parameter, connected in series with the VCA that controls the Multiples · per https://drillable.com · as [a 137 1 · level control](/eurorack/makers/doepfer-de/a-137-1/level-control) · [quote](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9?trace&start=6605&end=6732) · [sha256:78d2cf8eb5337b95…](/hashes/sha256:78d2cf8eb5337b958f7608eba76d671a496c9cb0b0056e6850961f6597d2b509)

### [multiples cv in](/eurorack/makers/doepfer-de/a-137-1/multiples-cv-in) (1 record)

- **attenuator** = with attenuator · per https://drillable.com · as [a 137 1 · multiples cv in](/eurorack/makers/doepfer-de/a-137-1/multiples-cv-in) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=5939&end=5972) · [sha256:9e8cc954f1ab9844…](/hashes/sha256:9e8cc954f1ab9844bf6e997de3242d15f456352476ed31a1f4b1ff7f58394122)

### [symmetry cv in](/eurorack/makers/doepfer-de/a-137-1/symmetry-cv-in) (1 record)

- **attenuator** = with attenuator · per https://drillable.com · as [a 137 1 · symmetry cv in](/eurorack/makers/doepfer-de/a-137-1/symmetry-cv-in) · [quote](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21?trace&start=6048&end=6080) · [sha256:6e484d19bd7f4d45…](/hashes/sha256:6e484d19bd7f4d45828ac7dc3adb0f8cef37532bb83694a077e19839913aa3a1)

## Captures (2)

- 9 Sep 2026, 00:05 UTC · https://doepfer.de/a100_man/A137_man.pdf · quotes only (no licence recorded) · 0 revisits · [text](/hashes/sha256:bf02c0f964c70ec034816e36e16f4253287eed707a2ef9f102b33c809ee969a9) (pdfium/7881, 7533 bytes), [older text](/hashes/sha256:fbfa5ad7d9aa0afe439ec4ff3883acc4cb92b62cb67c40d674320c9aa1d4642d) (pdfium/7881, 12 bytes) · capture [sha256:1398a28222fa7b6e…](/hashes/sha256:1398a28222fa7b6ecb4b3fa860213be05a3fdb0b1fccfd2d7f1396b0d50a2a55)
- 9 Sep 2026, 00:05 UTC · https://doepfer.de/A137.htm · quotes only (no licence recorded) · 0 revisits · [text](/hashes/sha256:1d3b17eaeb7ce2b0cd82ea443cbf7bdf3e4ea125b9af502d1a58428461a52c21) (drillable-html-text/1, 15358 bytes) · capture [sha256:2be5b009f0e58af2…](/hashes/sha256:2be5b009f0e58af236922a95c77e1c256e5dec886ac24378930168bda6218a7d)
2 things the latest capture still names and no reading of it has read.


A capture is what the source served at that moment; a later change at the source is a new capture, never an edit to this one.

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