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Home > Finished Products > NAD Style Fully Discrete HiFi Tone Control Preamplifier Board, Treble Bass Adjustment, Class A Pre-amp (No Op-Amp)

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NAD Style Fully Discrete HiFi Tone Control Preamplifier Board, Treble Bass Adjustment, Class A Pre-amp (No Op-Amp)

Name: NAD Style Fully Discrete HiFi Tone Control Preamplifier Board, Treble Bass Adjustment, Class A Pre-amp (No Op-Amp)
Brand: Emoryseric | HiFi Music Muse
Price: 23.1 USD
Availability: InStock

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Description

Option Description:

Version1: Finished Board
Version2: Kit
Version3: ALPS Kit for Volume Potentiometer (Loose Parts)
Version4: ALPS Finished Board for Volume Potentiometer
Version5: Kit Without Potentiometer (Loose Parts)
Version6: Finished Board Without Potentiometer

All components on the board are brand new!
For shipping safety and to accommodate buyers who prefer lead wires, the potentiometers on the finished boards are not pre-soldered. Buyers need to solder them themselves!
This product references the tone section of the British NAD3020 amplifier. It features a double-sided gold-plated PCB (1.6mm substrate, 35U copper thickness), assembled with audiophile-grade components. The circuit employs a single-ended Class A amplification design.
The amplification transistors use original ON Semiconductor high gain (HFE300+) audio-specific matched pairs: A992/C1845.
The subsequent two pairs use B647/D667 audio-specific matched pairs. Military-grade 718 factory copper-pin metal film resistors are used.
The voltage regulation circuit utilizes brand new LM317/337 high-precision, low-noise voltage regulator ICs.
Newly revised and upgraded version includes:
nichicon 35V 4700UF electrolytic capacitors
Seablue Nichicon BT series ultra-high temperature resistant electrolytic capacitors
Taiwan SONG high-quality potentiometers
The biggest feature of this tone circuit is that when adjusting the bass and treble, the midrange remains almost unchanged. The bass is powerful and elastic! The treble is delicate and not harsh! The sound is rich, mellow, and very pleasant to listen to! The effect is incomparable to op-amp based tone controls.
Tone control range: Bass ±15DB, Treble ±10DB
Potentiometer spacing (left to right): 40MM, 58MM
Circuit gain: 8 times
Dimensions: 13881MM
Voltage: AC: 24V-0V--24V (Our store has matching transformers. If needed, please order:
Attention! Beginners Must Read! 1: The power supply voltage must not be lower than AC dual 22V. 2: If you are just testing the bare board, you must connect all the potentiometer cases together with wires, and then connect them to the "GND" terminal on the power supply connection block on the board. This will eliminate noise. For audio signal input, shielded cables must be used! If installing into a chassis, please refer to the "single-point grounding" method I shared, as used in the finished machines assembled by our store.
Signal-to-Noise Ratio: With bass, treble, and volume potentiometers turned to maximum, you can only hear a faint bit of background noise when your ear is right next to the speaker! Please do not doubt the board's signal-to-noise ratio!

Grounding is a very profound subject.

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NAD Style Fully Discrete HiFi Tone Control Preamplifier Board, Treble Bass Adjustment, Class A Pre-amp (No Op-Amp)

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NAD Style Fully Discrete HiFi Tone Control Preamplifier Board, Treble Bass Adjustment, Class A Pre-amp (No Op-Amp)

Quantity:

CUSTOMER REVIEWS

You May Like

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