OldChen C1 Preamp Hi-End 6H8C/CV181-SE Vacuum Tube Pre-Amplifier

All items are guaranteed to be 100% brand new in the original box.

ONE Year Warranty!!

Specifications
Standard Edition Tubes: Soviet 5U4C Rectifier Tube *1, Soviet 6H8C Pre-amp Tubes *4
Signal Gain: 8x, 2x


Has the direct amplification function of a standard tube preamp, but also adds moderate treble and bass controls.
You can adjust the tone according to preference, making musical details clearer and more listenable at low volumes. Whether paired with a tube amp or a solid-state amp, it can polish the sound and also enhance high-frequency resolution, low-frequency power, and the overall dynamic range.
Extremely low noise is basically negligible. 0.08mV at low volume, 0.7mV at high volume. Signal-to-noise ratio is as high as 96db,
Distortion is around 0.15%, the frequency response curve is flat, and all indicators are based on actual measurements.
External high-margin EL pure copper transformer, 10H choke, CLC filter, tube rectification linear voltage regulation, two-stage direct-coupled cathode output circuit, all Rubycon electrolytic capacitors, Rel-cap fever coupling capacitors, WIMA tone capacitors, high-precision metal film resistors, 5 pure copper gold-plated stainless steel ceramic tube sockets, Omron relays responsible for the 4-way input and treble/bass intervention switching.
The rational matching of components and layout allow the machine's appearance and performance to reach an ideal state.
The rectifier tube uses a new-old-stock direct-heat rectifier tube 5U4C. The standard configuration is matched with 4 Russian imported 6H8C tubes.
The high-end configuration is matched with 4 Psvane "Big-Bottle" CV181-SE tubes.
The whole machine uses a standard 43cm large chassis, with a grand and stable dual VU meter design. The external tubes are convenient for tube rolling, increasing playability.
Net weight : 12 KG
Packaged weight : 14 KG