Double Heart Audio
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Double Heart Audio sells modern parts for vintage synthesizers. Repair for vintage synths and pro audio. Based in Austin Texas. Shipping worldwide.
05/12/2026
2x ultra rare Teisco SX-400s on the bench
05/08/2026
More EX-42 process pics
05/07/2026
Chipping away at this Yamaha EX-42
04/26/2026
Tascam 388 looking fine. Fully serviced. Freshly relapped heads ala JRF and new pinch roller from Athan Corp.
Tascam 388 freshly calibrated
04/21/2026
Set of six
Roland Jupiter-4 with after touch burning in.
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.
04/03/2026
New Jupiter-4 sliders otw
Mirano Echo Chamber 3
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Contact the business
Address
501 Pedernales Street Ste A-5
Austin, TX
78702