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We can provide power transformer which use for 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 !!!

YouTube channel > Otomon Lab YouTube Channel

Tube amplifiers


Total 437 Items.
  • NEW

300B SE tube pre amplifier for planar magnetic headphone

Amplifier using for planar magnetic headphone, output tube is 300B, driver tube is 417A, rectifier tube 5U4G. Can be used with all Western Electric tubes.
  • NEW
  • Recommendation

[ PROTOTYPE SALE ] 211/845 SE tube amplifier class A 18-20W output 117V input

Sales price: $ 3,850(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Prototype sale !!! It is SE amplifie using 211/845 tube as power tube. drive tube is 6SN7. High voltage version 1000V.
  • NEW

211/845 SE tube amplifier class A1 stereo 21W output

It is SE amplifie using 211/845 tube as power tube. Output is 21W as using 845 tube. Drive tube is 3A167M. High voltage version 1000V with top parts was used. Oil condenser drive in power supply.
  • NEW

PX4/PX25/300B stereo tube amplifier class A1, 8W output No NFB

It is stereo SE amplifie using PX4/PX25 and 300B tube as power tube. Output is 8W. Walnut wooden case with top class parts. This amp can be used with PX4, PX25 and 300B
  • NEW
  • Recommendation

DAC, USB decoder tube amplifier preamp (power amp) No NFB class A

DAC, USB decoder using 717A/42 tube for ouput, output transformer is Western Electric. Beautiful sound. Rectifier tube is 80 tube.
  • Recommendation

[PROTOTYPE SALE] VT-62/801 SE/PSE tube amplifier, WE404A tube drive

Sales price: $ 2,250(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
VT62/801A SE stereo tube amplifier. 2xVT-62 in one channel working in para single end, with output power is 12W. Prototype version, oil condenser. ALL Trans are vintage Hirata TANGO.
  • Recommendation

Use Pair Hirata Tango transformer FX-50-7S for 211/845/VT62

Sales price: $ 1,300(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
The output special order made transformer manufactured by Hirata TANGO, primary 7K ohm. Used for para SE amplifier. Max DC current up to 130mA
  • NEW

MM phono preamp CR type with NP-216 ouput transformer * ALL tubes are 396A, 6V6 tube for regulation

Special order made phono stage preamplifier. Using We396A, 5670 in phono stage and output stage. Highest quality parts was used for the best sound ever.

CD->RIAA converter, let your CD sound become LP sound, TAMURA OPT transformer

This used Tamura output transformer to convert CD signal as well as digital resource as iPhone, iPad sound to RIAA standard curve. Just connect RIAA out to MM phono stage and let it play as LP
This product is currently sold out.
  • NEW
  • Recommendation

REN904 DAC tube amplifier using ES9038Pro dual for USB, Bluetooth, CD

DAC decoder using ES9038 Pro chip, output tube is REN904. Output impedance is 600ohm. Can be use with USB, Bluetooth, CD.
  • NEW
  • Recommendation

Marantz CD-60 CD player modify using tube for DAC Philips TDA1541A

Marantz CD-60 CD player modified using tube for DAC decoder using Philips TDA1541A chip. Output tube is E82CC(6DJ8), output impedance is 600ohm.
  • Recommendation

45/2A3 PSE tube amplifier pure class A1 * No NFB * Prototype version

2A3/45 PSE tube amplifier prototype version. Amplifier has 3 blocks with separated power supply.
This product is currently sold out.
  • Recommendation

45/2A3 PP tube amplifier pure class A1 * Order made

2A3/45 tube amplifier . All transformers was put inside Wooden box. This is prototype version, all transformers are LUX. Amplifier has 3 blocks with separated power supply.
  • Limited edition

Pair OPT transformer for 300B, 2A3, 805 tube Hirata TANGO OPT FW-150-3.5Sr

Sales price: $ 2,000(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
OPT transformer for 300B, 2A3, 805 tube Hirata TANGO OPT FW-150-3.5Sr.
  • NEW

MM phono preamp using C3g tube with seperated power supply

Special order made phono stage preamplifier. Using D3a tube for phono stage with separated power supply. for MM catridges. You can order to use C3g tube or many other tube.
  • NEW

WE396A MM, phono preamp with seperated power supply

Special order made phono stage preamplifier. Using We396A for phono stage with separated power supply.