OTOMON Laboratory　(音門ラボ)/Product details page

Special order made amplifier, using 211/845 as drive tube for 211/845. Interstage transformer is NC-20F. Prestage is EF-37 or 6J7G. 117V, 230V version is available !!! Perfect sound !!!

You can change drive tube to 211 or 845 as well as power tube 211 or 845. Prestage is EF-37(6J7), rectifier tube is 5R4GW. Based on order from customer who are the audio mania,　who just want the best amplifier without being care about money. Chassis was made from cooper, very very beautiful. Amplifier feed was made from carbon fiber. All transformers was special order made from ISO TANGO. Output is special order made from ISO TANGO same as X-10S.

Wiring is America military spec, 16AWG teflon silver plated wire.

Plate volt is 1000V, drive stage is 800V. Working in pure class A, With drive tube is 211 or 845, output power is 18W. Drive tube is 211 or 845 and power tube is 845, then ouput power is 20W.

Specification:

Response frequency : 10Hz ~ 75Khz (-1db)
Hum level : 0.6mV
THD: 0.02% 1 W under 1% 18W

Sound is great, well balanced and wide sound stage. Very powerful bass sound and sweet middle sound. The high frequency is very natural and detail. It is best matching with all genre of music from Jazz to classical. 211 is better for Jazz while 845 is better for classical. No hum, no noise and quite silent.

Power transformer 230V, 117V, 100V is available. This is custom made on order, you can change the power tube to 300B or 845 v..v.. as well as change the previous state tube. Ask for more detail about price and time for making.