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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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"The Tesseract" 45 tube preamp, using for Bluetooth connection 2W output
  • NEW
  • Recommendation

"The Tesseract" 45 tube preamp, using for Bluetooth connection 2W output

Sales price: $ 1,300(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
45 tube pre amplifier with drive tube is 717A. Bluetooth driver is embedded, there are 2 selector AUX, Bluetooth. Walnut box 30mm thick was adopted.


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"The Tesseract" 45 SE tube amplifier using as power amp or preamp
  • NEW

"The Tesseract" 45 SE tube amplifier using as power amp or preamp

Special order made amplifier, using 45 tube as output tube, driver tube is 717A, output is 2W (input 1Vrms)


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PX25/PX-4 SE stereo tube amplifier class A1 * All HIrata TANGO transformer

PX25/PX-4 SE stereo tube amplifier class A1 * All HIrata TANGO transformer

Sales price: $ 2,600(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
It is stereo SE amplifie using PX-25 tube as power tube. Output is 9W with PX-25. Power tube can be changed PX4 to PX25 without any modification, just using switch for changing
This product is currently sold out.

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Early LONGFIELD SL-ONE the monster EL-156 tube amp Para pushpull * ALL Peerless transformers
  • Recommendation

Early LONGFIELD SL-ONE the monster EL-156 tube amp Para pushpull * ALL Peerless transformers

Sales price: $ 7,000(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
The first amplifier of LONGFIELD, model SL-ONE. Serial number #5 and #6. It is EL-156 Para Pushpull amplifier which procedure up to 100W of power output, UL connection and 40W for triode connection.
This product is currently sold out.

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Special order made EL-156SE tube amp with UTC transformers

Special order made EL-156SE tube amp with UTC transformers

Special order made amplifier using EL-156 as power tube. UTC transformers
and output XE-20S transformer. Amplifier has 2 parts, preamp and power amp, separately.


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"The Tesseract" 50 SE tube amplifier VT-62 drive 50 tube * class A2 10W
  • NEW

"The Tesseract" 50 SE tube amplifier VT-62 drive 50 tube * class A2 10W

Special order made amplifier, using VT62 as drive tube for 50' tube. Interstage transformer is NC-20F. Prestage is 6SN7, fixed bias for 50 tube.


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50 SE tube amplifier , class A1: 5W, class A2: 10W
  • NEW

50 SE tube amplifier , class A1: 5W, class A2: 10W

Special order made amplifier, using 6SN6 driving 50' tube. Interstage transformer is NC-16. Output Class A1: 5W, class A2: 10W


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

Passive preamp transformer finemet core attenuator * special order made

Special order made attenuator, transformer type with 23 steps. Sound is great, no signal lost, very musical. Transformer was made from finemet core


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45 SE tube amplifier 717A tube drive with All TAMURA transformer, no tubes include * Perfect sound !
  • Recommendation

45 SE tube amplifier 717A tube drive with All TAMURA transformer, no tubes include * Perfect sound !

Sales price: $ 1,200(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
45 tube amplifier with all TAMURA transformer, drive tube is 717A.
This product is currently sold out.

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PX25/PX-4 SE stereo tube amplifier class A1

PX25/PX-4 SE stereo tube amplifier class A1

It is stereo SE amplifie using PX-25 tube as power tube. Output is 10W. Power tube can be changed PX4 to PX25 without any modification.


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71A SE tube amplifier using as preamp and power amp with 1W output * bluetooth receiver
  • NEW
  • Recommendation

71A SE tube amplifier using as preamp and power amp with 1W output * bluetooth receiver

Sales price: $ 850(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
71A tube amplifier with Klangfilm output transformer, drive tube is Western EF86. Output is 1W. Can be used as preamp or buffer amplifier.
This product is currently sold out.

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71A PP stereo tube amp with Kenyon T-108 output transformer 100~117V input
  • NEW
  • Recommendation

71A PP stereo tube amp with Kenyon T-108 output transformer 100~117V input

Sales price: $ 1,300(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Very very rare 71A PP stereo tube amplifier, using Kenyon T-108 output transformer. Kenyon T-108 was made in 30s year, which is same era with Western electric. It use LUXMAN MQ-60 chassis.
This product is currently sold out.

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45 PSE tube amplifier with special order made X series transformer and walnut case
  • NEW
  • Recommendation

45 PSE tube amplifier with special order made X series transformer and walnut case

This is 45PSE tube amp (can be used with 2A3), special order made with all ISO (TANGO) transformers. Beautiful and hot sound.


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Sun Audio WE91B type 300B SE stereo tube amplifier
  • Limited edition

Sun Audio WE91B type 300B SE stereo tube amplifier

300B SE stereo tube amplifier Western WE91 type with all TAMURA transformer. Original is Sun Audio SV-300B, modified to Western Electric We91B type.


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45 PSE tube amplifier with special order made X series transformer and walnut case
  • NEW
  • Recommendation

45 PSE tube amplifier with special order made X series transformer and walnut case

This is 45PSE tube amp (can be used with 2A3), special order made with all ISO (TANGO) transformers. Beautiful and hot sound.


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"The Tesseract" 71A tube preamp, using for Bluetooth connection 0.7W output
  • NEW
  • Recommendation

"The Tesseract" 71A tube preamp, using for Bluetooth connection 0.7W output

Sales price: $ 1,100(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
71A tube pre amplifier with drive tube is 717A. Bluetooth driver is embedded, there are 3 selector AUX, CD, Bluetooth. Walnut box 30mm thick was adopted.
This product is currently sold out.

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By price   Recent   Items displayed
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