I built this in January, 2022. I haven't been using it lately, so it's time to pass it on. It's a nice amp...has worked without issue since I built it.
Asking $280, shipping to USA included. Feel free to make an offer.
I don't have experience shipping internationally, but I assume it's prohibitively expensive.
Some specifics:
Power transformer: Hammond 274BX
Output transformers: Edcor GXSE15-8-5k (15 watt, 8 ohm, 5k) There's a dent in one end bell from shipping damage - no functional problem.
Power supply choke: Triad C-14X (6H, 200mA, 150 ohm)
Optional power supply capacitor: CDE SFT 44T50J291B (50uF film, 440 VAC)
Triode/Ultralinear switch
Cathode feedback disable switch
Tube rectifier only (diodes D1 and D2 not installed)
Cathode resistors: 560 ohm
Output tubes: EH 6CA7 - bought as matched pair, used for about 6 months
Rectifier tube: Sovtek (Groove Tube) 5AR4 - used for 3 months
12AT7WA: Tung-Sol reissues - used for 6 months
Hammond aluminum chassis: 12" x 12" x 3" The chassis is nothing fancy. It's not finished very well, has welding marks, scuffs, etc. I attached walnut end panels made from some scrap wood. The switch labels are just electrical tape.
Voltage measurements:
6CA7: plate - 435, G2 - 439, cathode - 39.0
6CA7: plate - 436, G2 - 440, cathode - 37.9
12AT7: plate 1 - 206.2, cathode 1 - 1.91, plate 2 - 209.3, cathode - 1.92
Asking $280, shipping to USA included. Feel free to make an offer.
I don't have experience shipping internationally, but I assume it's prohibitively expensive.
Some specifics:
Power transformer: Hammond 274BX
Output transformers: Edcor GXSE15-8-5k (15 watt, 8 ohm, 5k) There's a dent in one end bell from shipping damage - no functional problem.
Power supply choke: Triad C-14X (6H, 200mA, 150 ohm)
Optional power supply capacitor: CDE SFT 44T50J291B (50uF film, 440 VAC)
Triode/Ultralinear switch
Cathode feedback disable switch
Tube rectifier only (diodes D1 and D2 not installed)
Cathode resistors: 560 ohm
Output tubes: EH 6CA7 - bought as matched pair, used for about 6 months
Rectifier tube: Sovtek (Groove Tube) 5AR4 - used for 3 months
12AT7WA: Tung-Sol reissues - used for 6 months
Hammond aluminum chassis: 12" x 12" x 3" The chassis is nothing fancy. It's not finished very well, has welding marks, scuffs, etc. I attached walnut end panels made from some scrap wood. The switch labels are just electrical tape.
Voltage measurements:
6CA7: plate - 435, G2 - 439, cathode - 39.0
6CA7: plate - 436, G2 - 440, cathode - 37.9
12AT7: plate 1 - 206.2, cathode 1 - 1.91, plate 2 - 209.3, cathode - 1.92
