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Nexxia Shop >HI-FI TV and Gaming >Audio Pre-Amplifiers >
Audio Pre-Amplifiers
A small Audio Pre-amplfier of fixed gain which can be used to boost line audio inputs into full Hi-Fi systems. It can be used for connection or Turn Tables with RIAA cartridges or for items such as MP3 players where the output level is low.
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KLAB20 Amplifier with Original White Front (with UK power supply)
This 20W amplifier manufactured by Keene Electronics is the same size as a Double Gang Back box and fit into the Wall. It is the ideal partner for our Ipod and Volume Control Wall plates and when used with Ceiling speaker creates an ideal mini Hi-fi system. It is a high quality stereo audio amplifier providing 20W (RMS per channel) of amplification eliminating the need to make space for a conventional amplifier. It draws its own power from an externally located mains adaptor and can be controlled is by infra red remote.
Key Features:
Flush mount - fits into a wall
IR control - Full remote control (carrier frequency 56 KHz)
20W RMS per channel
Fully complimentary output stages with built in short circuit, open circuit, thermal and under voltage protection.
Built in cross pole crowbar protection diode
Microcontroller controlled amplifier.
Volume Up, Volume Down plus 10 preset volumes, standby (sleep) and mute functions.
Bedroom friendly LEDs follow ambient light and get darker as the room gets darker.
Led indication of Power On/Off and volume Up/Down.
Installer friendly screw terminals for speaker & line input
Specifications:
Power output: 20W RMS per channel into 4ohms
Distortion: typically less than 0.2% up to rated power
Bandwidth: 20Hz to 20KHz Passive limitation built in
Supply: 10V to 15V (absolute max 18V DC) minimum current 3.0A. Connection via a 2.1mm DC connector centre positive, auto mute on under voltage.
Fuse: self resetting 3A built in to clear remove power for at least 20 seconds, clear fault and reconnect
Amplifier topology: full bridge mode all speaker connections are live ( no common ground connection)
Recommended minimum speaker impedance: 4 ohms per channel
Absolute minimum speaker impedance: 2 ohms per channel
SNR: 60dB
Voltage gain: 27dB
Input required to produce full output: approx 775Mv |
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Part Code: |
| K-LAB-20
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£99.95 inc VAT |
in stock 3 Days | 
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A small Stereo Audio Pre-amplifier of fixed gain which can be used to boost line audio inputs into full Hi-Fi systems. Connection are via phono left and right for input and output. It can be used for connection or Turn Tables with RIAA cartridges.
A phono/microphone pre-amplifier to allow magnetic cartridges and microphones to be connected to amplifiers without signal loss or deterioration. Supplied with AC/DC power adaptor.
Amplifies signals from low current phono and microphone sources
MIC/Phono switch
Suitable for stereo microphones or 2x mono microphones
High gain, low noise
Input connections - 1x 6.35mm stereo jack, 1x 6.35mm mono jack and L+R phono
Output connections - L+R phono
Black metal construction
Depth, external - 70mm
Gain, power Gp typ - 50dB
Impedance - 50ohm/km
Impedance, output - 10kR
Length / Height, external - 38mm
Outputs, No. of - 4
Ratio, signal to noise - 48dB
Voltage, input max - 3mV
Voltage, input min - 0.5mV
Voltage, output - 150mV
Width, external - 134mm
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