PRE-1 Preamp HiFi Pre-Amplifier Vacuum TubeAmplifier with Remote Control (Black Panel)

Description

This Preamp adopts the design of four inputs and two outputs, and the two outputs can be output to two different power amplifiers or active speakers at the same time. All use pure copper gold-plated ports. The power supply adopts two independent El square transformers, high voltage and low voltage separate output design, and the sealed shield is fixed in the chassis to minimize power interference. 6N4 and WY1 are used to form a multi-channel parallel voltage-stabilized power supply system after the 6Z4 tube is rectified. The tube screens of different working states are respectively supplied, and the independent power supply and the other tubes are not interfered with each other. The filter capacitors of the whole Preamp are all coupled with imported polypropylene capacitors with good reputation. High-performance parallel power supply voltage stabilization part with 8532W electron tube for voltage amplification Combined with low internal resistance J-level 6J9 as cathode follower output, it makes the Preamp's technical indicators first-class, the distortion is as low as only 0.018%, and it has rich 9th harmonic components. Imported Teflon silver-plated wire is used to improve signal details, reduce loss and reduce noise. The MCU switch is used to control the fully sealed relay to achieve signal conversion, avoiding switching noise and long life. The signal output uses a relay delay to avoid the noise generated by the electronic tube during the preheating process. Integrated sound path selection LED indication on the panel. Technical parameters Tubes: 6Z4x1, 6N2x1, WY1x1, USA 8532Wx2, 6J9x2. Input impedance: 100K Output impedence: 300Ω SNR: 90dB Frequency response: 10Hz-30KHz Harmonic distortion: ≥0.018% Supply voltage: AC 110V ± 10% (50Hz-60Hz) Size: 430mm X 320mm X 95mm(L x W x H) Packing size: 560mm x 480mm x 210mm (L x W x H) Net Weight: 8.8KG Gross weight:11.2KG