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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

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Total 347 Items.
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Luxman CL-35Mk2 tube preamp maintenanced by Otomon LAB
  • Recommendation
  • Limited edition

Luxman CL-35Mk2 tube preamp maintenanced by Otomon LAB

Sales price: $ 900(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
The legendary Luxman tube preamp will full function, phono stage, maintenance by Otomon Lab.


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417A-71A/101D tube pre-amplifier, Walnut wooden board, cooper plate voltage regulator 6DJ8-6V6
  • NEW
  • Recommendation

417A-71A/101D tube pre-amplifier, Walnut wooden board, cooper plate voltage regulator 6DJ8-6V6

71A tube preamplifier with drive tube is 417A. Output tube can be changed to VT-25, VT-52, 45, 2A3 tube. Luxury Walnut wooden board. This amp can be used with both 101D and 71A rotation.


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Luxman CL-35Mk3 tube preamp maintenanced by Otomon LAB
  • Recommendation
  • Limited edition

Luxman CL-35Mk3 tube preamp maintenanced by Otomon LAB

The legendary Luxman tube preamp will full function, phono stage, maintenance by Otomon Lab.
This product is currently sold out.

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Luxman SQ-38FD (Otomon LAB overhaul) 45 PP tube amplifier class A1
  • Recommendation
  • Limited edition

Luxman SQ-38FD (Otomon LAB overhaul) 45 PP tube amplifier class A1

Sales price: $ 1,650(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Luxman SQ-38FD (Otomon LAB overhaul) 45 PP tube amplifier class A1. Output stage changed to 45 tube, output power is 6W. Intergrated tube amp with phono stage, tone control.


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Western Electric 715 SE tube amp, all tubes included

Western Electric 715 SE tube amp, all tubes included

Sales price: $ 2,900(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Special order made amplifier using Western Electric 715 tube as power tube, output is 9W. This is new made item. All parts are new ones. Input voltage can be changed to use in 117V, 230V


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Final Art Model 808 using 808/811A stereo tube amplifier Shishido IITC all Blackgate condenser

Final Art Model 808 using 808/811A stereo tube amplifier Shishido IITC all Blackgate condenser

Sales price: $ 5,000(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
808 is called 300B killer. It was made based on master Shishido IITC. All transformer are special order made from Hirata TANGO. Output transformer is same as X-3.5S, can be used with both 808 and 811A


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811/808 SE tube amplifier 15W power output OTOMON special output transformer
  • NEW
  • Recommendation

811/808 SE tube amplifier 15W power output OTOMON special output transformer

Sales price: $ 4,850(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
[ ORIGINAL OPT ] This amplifier used special OTOMON transformer. Output tube can be used 808 or 811A tube, switch selectable. Prestage tube is C3g, driver tube is EL-34 or 6V6. Output power is 12~15W


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300B tube amplifier preamp, buffer preamp using 417 driver tube
  • NEW
  • Recommendation

300B tube amplifier preamp, buffer preamp using 417 driver tube

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


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PX4/PX25/300B stereo tube amplifier class A1, 8W output No NFB
  • 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 UX4 tube base


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DAC, USB decoder tube amplifier buffer preamp (power amp) using VT-62/801A tube
  • NEW
  • Recommendation

DAC, USB decoder tube amplifier buffer preamp (power amp) using VT-62/801A tube

Sales price: $ 2,350(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
DAC, USB decoder using VT-62 tube for ouput, transformer was used for output. It can be used as DAC preamp as well as power amp (7W of output power). Recitifier tube is 5Y3, driver tube is 396A.


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EL-37 SE tube amplifier output power 6W~9W ALL TUBES INCLUDED
  • NEW
  • Recommendation

EL-37 SE tube amplifier output power 6W~9W ALL TUBES INCLUDED

EL-37 SE tube amplifier with output 6~9W. Prestage tube is 717A, rectifier tube is 5U4, GZ34, GZ37.
This product is currently sold out.

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MM phono preamp using 396A tubes
  • NEW

MM phono preamp using 396A tubes

Tube phono stage preamplifier. Using 396A tube for phono stage and output stage is 396A,. for MM catridges.Price for this one is 1200USD, input voltage is 100, 117, 230V.


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VT-52 tube SE amplifier stereo, driver tube 71A, 101D
  • NEW

VT-52 tube SE amplifier stereo, driver tube 71A, 101D

VT-52 power amplifier, driver tube 71A, can be used 101D without modify or adjustment. Output power is 4.5W(8 ohm ) or 8.5W(16ohm). very beautiful and rich sound.
This product is currently sold out.

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DAC, USB decoder tube amplifier buffer preamp (power amp) using 211/845 tube
  • NEW
  • Recommendation

DAC, USB decoder tube amplifier buffer preamp (power amp) using 211/845 tube

DAC, USB decoder using 211/84 tube for ouput, transformer was used for output. It can be used as DAC preamp as well as power amp (6W of output power). Recitifier tube is 6AX4 x 2, driver tube is 396A.
This product is currently sold out.

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811 SE tube amplifier dynamic bias driver, 12W power output, ALL HIrata TANGO transformer
  • NEW
  • Recommendation

811 SE tube amplifier dynamic bias driver, 12W power output, ALL HIrata TANGO transformer

[ONLY ONE] All transformers are Hirata TANGO, perfect matching for almost speaker. Power tube is 811A, dynamic bias driven by EL-34 tube, prestage tube is EF-86. All tubes are included.
This product is currently sold out.

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[ONLY ONE] Tube preamp with phono stage with 30s year Thordarson output transformers
  • NEW
  • Recommendation

[ONLY ONE] Tube preamp with phono stage with 30s year Thordarson output transformers

Sales price: $ 2,850(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Only one was made. Preamp with phono amp stage, output transformer is Extra rare 30s year Thordarson output transformers. Sound is nearly same as Western style sound.


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