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We can provide special order made ISO (TANGO) power transformer which use for 117V, 220V, 230V.You dont need to use step down transformer as using my amplifier. Please contact me for more detail. !!!

71A tube stereo preamp, booster, amplifier 77/78 tube drive * PHILIPS transformer 110/120/230V

This product is not for sale, if you want the same item, please contact me for special order making
Manufacturer:
D.I.Y

Audio amplifier » Tube amplifiers Audio amplifier » Preamplifiers
It is preamplifier (line stage) with 3 input and 2 output. One output is 16ohm for speaker , one using for buffer (line) amplifier which has impedance 600ohm.

All tubes are NOS one. tube 77 (78) is same as 310A tube but has 6.3V heater. Can change to 310A tube just some small modification.

Output transformer and power transformer are vintage Philips ones, heater transformer is Raytheon. Output is 0.7W, it can be used with high sensitive speaker. Sound is very beautiful and musical. Amplifier is quite silent, no noise , no hum can be found.

Power transformer can be used with 110V, 120V, 165V,189.220V and 240V

Due to lack of transformer, this is only one, no more can be made.
Click to the image to view it in big size and please read our busines term before making your decision

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71A tube stereo preamp, booster, amplifier 77/78 tube drive * PHILIPS transformer 110/120/230V

71A tube stereo preamp, booster, amplifier 77/78 tube drive * PHILIPS transformer 110/120/230V

71A tube stereo preamp, booster, amplifier 77/78 tube drive * PHILIPS transformer 110/120/230V

71A tube stereo preamp, booster, amplifier 77/78 tube drive * PHILIPS transformer 110/120/230V