Ultra Low Distortion Preamplifier with Tone Controls Kit

K5171

DISCONTINUED

This item is no longer available to purchase.

Instructions

Overview

(SC Mar-Apr ‘19) This high quality low distortion and low noise stereo pre-amplifier can be used with just about any amplifier modules to form a stereo amplifier of your own design. It can also be used as a stand alone pre-amp. It is an evolution from the 2011 ultra-LD pre-amplifier design from Silicon Chip with the added inclusion of tone controls and infra-red control for input switching, muting and volume. Runs from 15V DC rails making it suitable for use in a wide variety of amplifier designs.

Features

  • Very low noise and distortion
  • Remote controlled input selection and volume control with muting
  • Manual volume control plus bass and treble cut/boost controls
  • Tone control defeat switch bypasses bass and treble controls
  • Minimal interaction between tone controls
  • Can be used with just about any power amplifier, including the Ultra-LD series and the 20W Class-A amp
  • Designed to be mounted in the front of a stereo amplifier chassis, but is also suitable for standalone use
  • Three status LEDs
  • Runs from ±15V DC


Why buy an Altronics kit?
Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.

Information & Downloads

Specifications

  • Frequency response: flat from 20Hz to 20kHz, -1.25dB @ 100kHz
  • Bass adjustment range: ±15dB at 20Hz; ±13dB at 75Hz
  • Treble adjustment range: ±15dB at 20kHz; ±14dB at 10kHz
  • Input impedance: 22kΩ
  • Output impedance: 100Ω
  • THD+N: <0.001%, 80kHz bandwidth;
  • typically <0.0003%, 20kHz bandwidth
  • Signal-to-noise ratio: -121dB with tone controls out; -114dB with tone controls in
  • Channel separation: >80dB @ 1kHz; >67dB @ 10kHz
  • Input separation: >98dB @ 1kHz; >80dB @ 10kHz
  • Maximum gain: two times (6dB)
  • Signal handling: up to 4V RMS input, 8V RMS output

      • *Specifications are subject to change without notice.

Warranty & Returns

12 MONTHS

We offer 12 months warranty on this product from its date of purchase. This is available from Altronics stores, online purchases or Altronics resellers. In accordance with our full warranty terms we will repair, replace or refund if goods you have purchased from us are defective.

14 DAY MONEY BACK GUARANTEE

Not withstanding our warranty policy, if you are dissatisfied with our goods or service you may return the goods within 14 days of our despatch date. Simply contact us for a return authorisation number and we will refund your purchase in full, less transport costs on receipt of goods. All returned goods must be in as sold condition including all packaging, instructions, invoices etc.