Reference UK NAD Discrete Tone HIFI Preamp Class A Preamplifier Amplifier Audio

Reference UK NAD Discrete Tone HIFI Preamp Class A Preamplifier Amplifier Audio

This machine refers to the tone part of the British NAD3020 power amplifier, carefully designed layout, advanced all-aluminum chassis (volume knob is solid aluminum car), 2-way audio signal input switching selection control, copper gold-plated RCA, wiring adopts tree-type grounding wiring grounding method, The signal-to-noise ratio is high, the components are assembled, the circuit adopts the single-ended class A amplification form, and the amplification tube adopts the Japanese original high magnification factor (HFE): 2SA992/2SC1845 audio dedicated pair tube

. Japan's nichonic Nikon, Panasonic and other electrolytic capacitors, military 718 factory copper foot metal film resistors, the power supply uses a 30W high-grade toroidal transformer (copper wire, A-grade silicon steel), LM317/337 high-precision voltage regulator IC power supply, volume potentiometer adopts Japanese original ALPS16 type high-quality potentiometer, high and low tone using 2 Taiwan-made SONG high-quality potentiometer, durable. The biggest feature of this tone is to adjust the high and low frequencies, the mid frequency is almost unchanged, and the low frequency is full of elasticity! The high frequency is slender and not harsh! The sound is mellow and very endearing! Effect seconds op amp tone! At least a few streets away :)

The line gain is 8 times, the treble adjustment range is +-10DB, and the bass adjustment range is +-15DB.

Signal-to-noise ratio: high-bass potentiometer, the volume potentiometer is turned to the maximum, and the ear is close to the speaker to hear the bottom noise!

Size: width 165MM depth 210MM height 75MM

Voltage: 115V/230V50HZ Optical

Precautions for use: Turn on the front stage first, then turn on the rear stage, turn off the rear stage first, then turn off the front stage, so that there will be no impact sound when switching on and off. Do not force a very tight RCA plug into the RCA socket, loosen it a little and then plug it in, otherwise it will be damaged.