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We can provide power transformer which use for 117V, 220V, 230V, 240V.
YouTube channel > Otomon Lab YouTube Channel
I will give discount 10% or more for all item in my eBay listing, contact me for more detail

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Total 1267 Items.
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VT-62/10Y drive 211 tube amplifier monoblock x 2 All Interstage transformer
  • NEW

VT-62/10Y drive 211 tube amplifier monoblock x 2 All Interstage transformer

Special order made amplifier, using VT62/10Y/VT-25 as drive tube for 211. No coupling condenser was used, all stage used interstage transformer. First stage is 417A. Rectifier tube is GZ34x4.


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【Prototype sales】 Only 1 limited 2A3 SE tube amplifier amp ALL HIRATA TANGO, Western Electric wire
  • Recommendation

【Prototype sales】 Only 1 limited 2A3 SE tube amplifier amp ALL HIRATA TANGO, Western Electric wire

Sales price: $ 1,700(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
This is prototype 2A3 tube amplifier of new design, using C3g as driver tube. If you saw the status that this item was sold out, the nearly same one will cost 1950USD. Tubes are not included.
This product is currently sold out.

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45 PSE tube amplifier with walnut case
  • NEW
  • Recommendation

45 PSE tube amplifier with walnut case

This is 45PSE tube amp (can be used with 2A3), special order made with all ISO (TANGO) transformers. It is one of the best 45 PSE tube amp I have made.


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Passive preamp transformer finemet core attenuator 48 steps * special order made
  • NEW
  • Recommendation

Passive preamp transformer finemet core attenuator 48 steps * special order made

Special order made attenuator, transformer type with 48 steps, each step is -1.5 db. Sound is great, no signal lost, very musical. Transformer core is made from finemet meterial.


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2A3 PSE tube amplifier with special order made transformer and walnut case
  • NEW
  • Recommendation

2A3 PSE tube amplifier with special order made transformer and walnut case

This is 2A3PSE tube amp, special order made with all ISO (TANGO) transformers. It is one of the best 2A3 PSE tube amp I have made.


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211 SE tube amplifier class A1 monoblocks 25W output
  • NEW

211 SE tube amplifier class A1 monoblocks 25W output

It is SE amplifie using 211 tube as power tube. Output is 22W. Drive tube is C3g. High voltage version 1000V with top parts was used. Oil condenser drive in power supply.


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Passive preamp transformer finemet core attenuator 48 steps * special order made
  • NEW
  • Recommendation

Passive preamp transformer finemet core attenuator 48 steps * special order made

Special order made attenuator, transformer type with 48 steps, each step is -1.5 db. Sound is great, no signal lost, very musical. Transformer core is made from finemet meterial.


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【Special price】307A SE tube amplifier amp 60s years Partridge OPT Wenger wood case
  • Recommendation

【Special price】307A SE tube amplifier amp 60s years Partridge OPT Wenger wood case

Sales price: $ 1,650(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
307A tube amplifier with drive tube is EF37. Output is 5-6W. Prestage tube can be changed to 6J7, WE348A, ITT 5/175D without modification. Price include all tubes.
This product is currently sold out.

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2A3 SE tube amplifier
  • NEW
  • Recommendation

2A3 SE tube amplifier

2A3 tube amplifier with drive tube is C3g. Output is 6W. Can be ordered to change tube to 45, 300B, PX-4, PX-25.


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Special made TESLA EL-50 drive EL-51 tube amp, all top plate tube

Special made TESLA EL-50 drive EL-51 tube amp, all top plate tube

Special order made amplifier using EL-50 as drive tube and EL-51 tube for power tube. Both EL-50 and EL-51 are very very rare tube, they are nearly same and has top plate. Rectifier tube is U19.


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Passive preamp transformer finemet core attenuator, step up 1:6, 23 steps
  • NEW
  • Recommendation

Passive preamp transformer finemet core attenuator, step up 1:6, 23 steps

Sales price: $ 1,500(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Finemet attenuator, autoformer type with 23 steps. Sound is great, no signal lost, very musical. Step up ratio is 1:6
This product is currently sold out.

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45PP stereo tube amp with LUXMAN output transformer * 100~230V input
  • Recommendation
  • Limited edition

45PP stereo tube amp with LUXMAN output transformer * 100~230V input

Extra rare 45 tube amplifier, working in class A1 push pull. Output transformer is Luxman OY series. Output is 7W class A.


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Passive preamp transformer finemet core attenuator 48 steps * special order made
  • NEW
  • Recommendation

Passive preamp transformer finemet core attenuator 48 steps * special order made

Special order made attenuator, transformer type with 48 steps, each step is -1.5 db. Sound is great, no signal lost, very musical. Transformer core is made from finemet meterial.


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71A PSE stereo tube amp No NFB special order made
  • NEW
  • Recommendation

71A PSE stereo tube amp No NFB special order made

This is the best amp which has output under 2W that I have ever made. Using 71A tube, para single end amplifier. Driver tube is C3g, rectifier tube is 83, can be changed to 80. No NFB was used !


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【3 days sales】 45SE tube amplifier amp ALL HIRATA TANGO without tubes included
  • Recommendation

【3 days sales】 45SE tube amplifier amp ALL HIRATA TANGO without tubes included

Sales price: $ 800(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
This sales was listed only in 3 days. 45 SE tube amplifier with drive tube is 717A. Output is 3-5W. Prestage tube can be changed to 6SJ7, 5963 without modification.
This product is currently sold out.

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45PP stereo tube amp with LUXMAN output transformer * 100~230V input
  • Recommendation
  • Limited edition

45PP stereo tube amp with LUXMAN output transformer * 100~230V input

Sales price: $ 1,300(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Extra rare 45 tube amplifier, working in class A1 push pull. Output transformer is Luxman OY series. Output is 7W class A.
This product is currently sold out.

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◀◀ 58 59 60 61 62 63 64 ►►