I guess this explains why there are no Chinese clone amplifiers based on Bob Carver's designs: (Note: This schematic is for the 1988 'Silver Seven' that used 14 KT88 tubes and was rated at 375 watts into 8 ohms. The specs and photo are for the 2014 'Silver Seven 700' that uses 20 KT120 tubes):

Carver Silver Seven 700 Monoblock

Rated Power (8 ohms): 900 watts RMS continuous - 900 watts RMS with vocal and music

Frequency Response: 2 Hz to 85 kHz (-3 dB)

Distortion: Less than 0.5%

Power Bandwidth: 18 Hz to 28 kHz

Line Inputs: 2 (RCA); Normal (AC coupled) or Lab Direct (DC coupled)

Input impedance: 100 K ohms

Gain: 36 dB

Tube complement: One 12BY7A, one 12AL5, three 12BY7A, and twenty KT-120s

Hum and Noise: Better than 120 dB, referred to 700 watts, (A-weighted)

Bias: Rear panel potentiometer adjustment

Source Impedance: 1.7 ohms

Speaker Output Taps: 2, 4, and 8 ohms. (Designed to drive any load 0.75-ohm and higher)

Color: Deep burgundy with gloss black, natural aluminum, and bright chrome highlights

Dimensions: Amplifier Chassis: 9” (228.6mm) x 13” (330mm) x 20” (508mm) x 2 - Power Supply Chassis: 9” (228.6mm) x 11” (279.4) x 20” (508mm) x 2

Weight: Amplifier Chassis: 55 lbs. x 2 - Power Supply Chassis: 45 lbs. x 2

Warranty: Lifetime warranty including the tubes.(DC restorer circuit means that the tubes will last as long as 50 years)