Double Heart Audio

Double Heart Audio Double Heart Audio sells modern parts for vintage synthesizers. Repair for vintage synths and pro audio. Based in Austin Texas. Shipping worldwide.

2x ultra rare Teisco SX-400s on the bench
05/12/2026

2x ultra rare Teisco SX-400s on the bench

More EX-42 process pics
05/08/2026

More EX-42 process pics

Chipping away at this Yamaha EX-42
05/07/2026

Chipping away at this Yamaha EX-42

Tascam 388 looking fine. Fully serviced. Freshly relapped heads ala JRF and new pinch roller from Athan Corp.
04/26/2026

Tascam 388 looking fine. Fully serviced. Freshly relapped heads ala JRF and new pinch roller from Athan Corp.

04/25/2026

Tascam 388 freshly calibrated

Set of six
04/21/2026

Set of six

04/19/2026

Roland Jupiter-4 with after touch burning in.

It’s not a recap unless ALL the electrolytic caps have been replaced! A second Roland Jupiter-4 OTB that had the PSU cap...
04/08/2026

It’s not a recap unless ALL the electrolytic caps have been replaced! A second Roland Jupiter-4 OTB that had the PSU caps swapped in 2011 and you can clearly see leaking electrolyte on the leads of these decoupling caps.

New Jupiter-4 sliders otw
04/03/2026

New Jupiter-4 sliders otw

03/25/2026

Mirano Echo Chamber 3

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501 Pedernales Street Ste A-5
Austin, TX
78702

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