OTOMON Laboratory　(音門ラボ) / 【Special price】307A SE tube amplifier amp 60s years TAMURA OPT with all tubes, included Bluetooth !

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【Special price】307A SE tube amplifier amp 60s years TAMURA OPT with all tubes, included Bluetooth !

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 price】307A SE tube amplifier amp 60s years TAMURA OPT with all tubes, included Bluetooth !

THIS ITEM WAS SOLD OUT

Manufacturer:: OTOMON Lab

Audio amplifier > Tube amplifiers Audio amplifier > Special Order Made

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.

Bluetooth connect is supported help you connect your amp with your iPhone, smartphone and enjoy music.

Output transformer is 60s year TAMURA made. It was taken from NHK broadcast station device. Very rare and valuable.

It is 110-120V spec, if you want to change to 230V let me know. Perfect amplifier with power tube 307A and drive tube 717A.

307A is direct heat penthode tube, very special tube, it is better to use Western Electric tube if you have chance to get it.

The sound is very beautiful and detail. The sound 's balance is very good with musical in note.

Specification:

HUm lever : under 0.1mV
Response frequency: 25Hz~50KHz (-2db)
Total harmonic distortion : 0.3% 1W
Output level 5W 8ohm 1Vrms
Power consumtion: 30W

All tubes are included.

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

Rectifier tube is 5U4, 5AR4, GZ34 ... .

Click to the image to view it in big size and please read our busines term before making your decision