Decky Posted March 23, 2013 Posted March 23, 2013 (edited) Item: 6AS7 (6080) OTL headphone amp Location: Canberra ACT Price: $385 fixed (shipping included) Item Condition: DIY (very little use) Reason for selling: Surplus Payment Method: Pickup - Cash, Bank transfer Extra Info: This amp is based on a famous OTL design that started by an Aren van Waarde DIY project that opened a pandora's box and resulted in a numerous incarnations over time. These are some links that talk about this amp: http://headwize.com/?page_id=427 http://hem.passagen.se/ebcpecz/Tube/6AS7%20Headphone/headphone.html My amp is based on the original project but employs a custom made transformer and some very good quality parts and P2P silver wiring. I rebuilt this amp from ground up just a year or so ago but it has seen very little work since I did not use it with my current headphones (AKG K702s). Tubes that I settled with are Tungsol NOS 6080 and Siemens 6922. Send me a PM of interested in other parts that I used. RCAs are gold plated copper. The background noise of this amp is virtually zero - in fact it is quieter that most of the SS amps I heard. I have quite a few spare valves that I will include in the package: - 2x GE6080 NOS (one slightly used) - 1x RCA 6AS7G (black) NOS - 1x 6N13PJ (Chinese copy of 6AS7G) - 1x Siemens 6922 (new never used - from a matched pair) Pictures: Edited March 25, 2013 by Decky 2
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