OTOMON Laboratory　(音門ラボ) / Special made "The Tesseract" 71A PP tube amp with Amorphous OPT transformer

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Special made "The Tesseract" 71A PP tube amp with Amorphous OPT transformer

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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Special made "The Tesseract" 71A PP tube amp with Amorphous OPT transformer

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Manufacturer:: OTOMON Lab

Audio amplifier > Tube amplifiers Audio amplifier > Special Order Made

Special made amplifier using 71A tube and output transformer with Amorphous core. Amplfier is push pull with 71A tube, rectifier is 80 tube and prestage tube is ECC83. Input 117V.

Max output power is 2W pure class A, max about 4W. To enjoy the pure sound of Amorphous core transformer, this amplifier does not adopted NFB. Sound is perfect with rich low frequency and beautiful in midrange.

71A tube is excellent tube for audio, it is same as 101D, 102D , which is very musical and beautiful sound, but it has low output power so it is very difficult to make an power amplifier with 71A as output tube. An single end 71A tube can procedure max 0.8W, this amplifier is push pull working in class A1, give output 4W , good enough for driving speaker higher than 95db.

Specification:

Response frequency: 20Hz~ 55KHz(-1db)
Hum level : 0.2mV

Auto bias, you dont need to care any thing every time changing tube.

Rectifier tube is 80

I dont include tubes but if you want I will include all tubes as gift incase you promise no claim or return for anything happened.

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