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You can order input voltage 117V, 220V, 230V, 240V.

I dont open information about schematic, parts, transformer using in my amplifier. My brand name is the guarantee to what I do with my production !!!

For all item on eBay, I will discount 10% or more of listing price, contact for more detail.

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Tube amplifiers


Total 510 Items.
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45PP tube amplifier pure class A1, can be used as preamp * No NFB * TAMURA transformer
  • Recommendation

45PP tube amplifier pure class A1, can be used as preamp * No NFB * TAMURA transformer

Sales price: $ 2,150(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
45 PP tube amplifier prototype version using Tamura transformer. Due to limitation of transformer, order made for this amplifier will use TANGO or ISO transformer. It can be used as pre or buffer amp.


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71A PP tube amplifier class A/preamp * ALL transformer are old TANGO * output 2.5W
  • NEW
  • Recommendation

71A PP tube amplifier class A/preamp * ALL transformer are old TANGO * output 2.5W

Sales price: $ 1,200(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
71A tube amplifier with drive tube is 396A. Input volt 100V, if you want to change to 117V or 230V let me know. It can be used as preamp too.


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811A/100th SE tube amplifier Hashimoto transformer 16W/channel power output
  • NEW
  • Recommendation

811A/100th SE tube amplifier Hashimoto transformer 16W/channel power output

This amplifier used both 811A and 100th as output power tube. You can change between 2 tubes by switch. Prestage tube is 717A, driver tube is EL-34. Output power is 16W/channel with 811A tubes
This product is currently sold out.

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71A/101D drive VT-62 SE tube amplifier 7W power Zero NFB (O.U.D.D.C)
  • NEW
  • Recommendation

71A/101D drive VT-62 SE tube amplifier 7W power Zero NFB (O.U.D.D.C)

This is VT-62 tube amp that adopted circuit O.U.D.D.C, and it is exactly the best VT-62 tube amp that I made.


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811A/808 SE tube amplifier 16W/channel power output
  • NEW
  • Recommendation

811A/808 SE tube amplifier 16W/channel power output

[ ORIGINAL OPT ] This amplifier used special OTOMON transformer. Output tube can be used 808 or 811A tube, switch selectable. Prestage tube is 717A, driver tube is EL-34. Output power is 16W/channel


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71A PP tube amplifier class A * ALL transformer are old TANGO * output 2.5W
  • NEW
  • Recommendation

71A PP tube amplifier class A * ALL transformer are old TANGO * output 2.5W

71A tube amplifier with drive tube is 717A and 6SN7. Input volt 100V, if you want to change to 117V or 230V let me know.
This product is currently sold out.

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45 PP tube amplifier pure class A1 Dual monoblock * driver tube 71A * Zero NFB 10W (O.U.D.D.C)
  • Recommendation

45 PP tube amplifier pure class A1 Dual monoblock * driver tube 71A * Zero NFB 10W (O.U.D.D.C)

45PP tube amplifier. Driver tube 71A x 2. This adopted O.U.D.D.C and absolutely the best 45 push pull amp that I have ever made. This is the first Dual mono block amplifier that OTOMON made.
This product is currently sold out.

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Western Electric 715 SE tube amp with all Luxman transformer

Western Electric 715 SE tube amp with all Luxman transformer

Special order made amplifier using Western Electric 715 tube as power tube, output is 8W. This is order made item.


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71A PP tube amplifier class A * ALL transformer are old TANGO * output 2.5W
  • NEW
  • Recommendation

71A PP tube amplifier class A * ALL transformer are old TANGO * output 2.5W

71A tube amplifier with drive tube is 396A and 6DJ8. Input volt 100V, if you want to change to 117V or 230V let me know.
This product is currently sold out.

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【SALE】211 SE tube amplifier drive tube 2A3, class A1 stereo 18W output (O.U.D.D.C) Zero NFB

【SALE】211 SE tube amplifier drive tube 2A3, class A1 stereo 18W output (O.U.D.D.C) Zero NFB

It is special order made SE amplifie using 211 tube as power tube. Stereo spec, output is 18W per channel. Driver tube is 2A3 or 45, using O.U.D.D.C in driving power tube. This amp weight is 40kg.
This product is currently sold out.

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300B tube amplifier preamp Zero NFB ( O.F.A.T included ) buffer preamp using 12AU7 driver tube
  • NEW
  • Recommendation

300B tube amplifier preamp Zero NFB ( O.F.A.T included ) buffer preamp using 12AU7 driver tube

Preamp tube amplifier using ouput transformer, 300B was used for output tube. Recitifier tube is 5U4, driver tube is 417A. Ortofon Finemet Attenuator Transformer included.


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2A3 SE tube amplifier pure class A1 All driver tube are DHT tubes (O.U.D.D.C)
  • Recommendation

2A3 SE tube amplifier pure class A1 All driver tube are DHT tubes (O.U.D.D.C)

Sales price: $ 2,350(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
2A3SE tube amplifier. This is the first amplifier of OTOMON using all DHT tubes. Sound is very beautiful, sweet and analog.


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2A3 PP tube amplifier pure class A1 monoblock x 2 * driver tube 71A * Zero NFB 20W (O.U.D.D.C)
  • Recommendation

2A3 PP tube amplifier pure class A1 monoblock x 2 * driver tube 71A * Zero NFB 20W (O.U.D.D.C)

Sales price: $ 3,980(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
2A3PP tube amplifier. Driver tube 71A x 2. This adopted O.U.D.D.C and absolutely the best 2A3 push pull amp that I have ever made.


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【Prototype sale】300B drive 300B stereo tube amplifier class A1, no NFB 9W output (O.U.D.D.C)
  • Recommendation

【Prototype sale】300B drive 300B stereo tube amplifier class A1, no NFB 9W output (O.U.D.D.C)

It is stereo SE amplifie using 300B tube as power tube. Driver tube is 300B. Pure class A1, Zero NFB. Price in case you see this amp is sold out 3800USD plus shipping fee, tubes are not included


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71A/101D drive VT-62/VT-25/10Y SE monoblock tube amplifier 8W power Zero NFB (O.U.D.D.C)
  • NEW
  • Recommendation

71A/101D drive VT-62/VT-25/10Y SE monoblock tube amplifier 8W power Zero NFB (O.U.D.D.C)

This is VT-62 tube amp that adopted circuit O.U.D.D.C, and it is exactly the best VT-62 tube amp that I made.


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71A drive PX4/PX25 stereo tube amplifier class A1, no NFB 5~12W output (O.U.D.D.C)
  • Recommendation

71A drive PX4/PX25 stereo tube amplifier class A1, no NFB 5~12W output (O.U.D.D.C)

It is stereo SE amplifie using PX4/PX25 tube as power tube. Driver tube is 71A. Pure class A1, Zero NFB. Price in case you see this amp is sold out is 3500USD plus shipping fee, tubes are not included
This product is currently sold out.

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