12AX7 MARANTZ M7 circuit electronic tube preamp tube power amplifier kit finished product fever preamp
Features
Adopting Japanese original ALPS 16 type shaft length 15mm 100k double-connected potentiometer, the transfer switch is 2*6 file produced by Taiwan-owned factory, you can adjust the positioning port to be changed into *4 file. Use all AC power supply to 3 12ax7 parallel power supply 4+5 short circuit and 9 pin connection 3.15v*2=6.3v
1. Adopting 0.8mm brushed stainless steel plate CNC punching chassis, the signal-to-noise ratio is as high as -99dB, and the background is extremely clean.
2. The power transformer adopts H360 0.5 piece 76*40 iron core, the primary is two groups of 110v, the series connection is 220v and the connection is 110v, the secondary filament winding is specially grounded with double shielding layer, and the grounding line is yellow green line outlet.
3: A set of filaments 3.15v*2 for 3 12ax7 filaments (12ax7 4+5 and 9 feet for 6.3v)
4, high voltage 270v * 2 used 6z5p bile rectifier.
5, the amplifier circuit uses scaffolding strip welding, power supply uses PCB
6, gold-plated RCA seat, 4 sets of signal input, 1 set of output.
7. Use WIMA MKP10 0.1uf capacitor, 0.39u Swedish RIFA PHE426 series, I T 2.2uf, capacitor and other audio special capacitors.
8, applicable to the global voltage standard, (110v 220v through the wiring method), and 220v-230v-240v primary please buy and customer service instructions after confirmation
9: Chassis size 32*17*5cm The total height is about 10cm, the space for the machine, the required height is not less than 18cm.
Main data:
AC power supply: 110v-220V (240V) optional, global voltage standard
Input socket standard: RCA seat (4 sets of inputs, 1 set of outputs)
Frequency response: 10-26kHz (+/-0.11dB) voltage amplification about 15 times
Total harmonic distortion: 0.078%
Signal to noise ratio: -99dB
