1. 24K gilt RCA for input 

2. AC Filter and R type transformer

3:HIgh-speed power supply and large-capacity filter capacitors

4:Using fever pipe K170 J74 2SC2240/A970... output is the use of the tube MJD20/MLE20 20A high current three Ken (SK)

 Measured parameters

Input Level: 1.0V Frequency Response: 10-60KHz(±1.5dB) 

Audio Input Impedance: 100KOhm Earphone Impedance: 32-600 ohm 

Power Supply: AC 220V /110V/60Hz 

S/N: 102dB Max Power Dissipation: 50W 

Dynamic range: 111dB Dimension: 9.84” x 11” x 2.5” --10 LBs 

stereo crosstalk,DB:102dB

THD: 0.015%

D3.5 and HP100 with