Functional features:

1. Optional power upgrade kit (refer to the special power black box for German octa gall machine)

2. Lotus seats are changed to rhodium plated RCA

3. The potentiometer uses alps27 imported from Japan, which has undoubtedly good sound quality performance and better reliability

4. Add a partition between the circuit board and the transformer to eliminate interference

5. The specially designed relay input selection circuit will not cause sound crosstalk of other groups to the current channel

6. Output delay design to prevent DC output from impacting power amplifier and speaker when starting up

7. Both groups of high voltage are stabilized by operational amplifier servo + FET, with low temperature wave, high speed, quieter background and better sound quality reduction

8. The indicator swing can be turned off (only the indicator swing can be turned off, not the indicator light)

9. AC and DC switching of filament power supply

10. It has the high and low tone adjustment function, and can also close (relay switching) the tone circuit, without common mixing of low and high tones

11. The electrolysis and red Wima of the power supply are consistent with the original parameters, and the sound is neutral and balanced

12. Transformer: Japan Z11 ei86 iron core 90W

13. Chassis: all aluminum, standard size: 430 * 330 * 100mm, with meter, weight 10kg, no screw design on the upper cover, large R angle on the edge, perfect process, and we can't find a better chassis at the same price

14. Standard electronic tube: domestic 6n11 electronic tube x4, which can replace e88cc, 6922 and 6dj8

15. Output: 2 groups of RCA + 1 group of mono balance (balance version: 2 groups of RCA + 1 group of XLR balance output at the same time)

16. Input: 1 set of mono balance + 3 sets of RCA (the balance version is 1 set of XLR + 3 sets of RCA)

Parameters:

Signal to noise ratio: DC power supply of filament 100dB (when output 2V, the volume is about 2 o'clock position)

Magnification: 6.5x

Frequency range: 16hz-100k (± 0.5dB)

Tone bass adjustment range: 50Hz ± 6.5db

Tone treble adjustment range: 15KHz ± 6.5db

Input impedance: 100K

Output impedance: 200 Ω

Maximum output undistorted voltage: 25V RMS

Distortion: 0.2% (the meter is closed without negative feedback)