Alpha Link 20
4 X 350W Class D Network Amplifier
Product at a Glance
The British Acoustics Alpha Link 20 is a compact 4-channel DSP amplifier delivering 4 × 350W @ 4Ω, supporting low-impedance and 70V Hi-Z operation for versatile loudspeaker systems. Featuring analogue and Dante™ inputs/outputs, it integrates seamlessly into networked audio setups. Its Class D design ensures energy efficiency, low THD (<0.1%), and a damping factor over 400 for precise bass control. Built for reliability, it includes mains in-rush protection, signal limiters, and quiet 32 dB fan noise. Rotary knobs and LED indicators provide intuitive control. Housed in a sleek black aluminium chassis with matte white front, it fits cleanly into any rack for fixed or mobile use.
CRAFTSMANSHIP
Painstakingly Perfect Production
Over the years, craftsmanship has been closely linked with small scale individualistic production. Back in 1972, we started the same way. As we grew in scale & size, it was difficult to build each speaker individually, but quality control was of utmost importance as so switching to a general assembly line was simply not an option. So we wrote up a code, one quite like enigma, to ensure quality control. We selected the right partners, got the right tools, and in cases where those weren't available, we invented them. We grew slower than most as our aim was to last longer than most.
TECHNICAL SPECIFICATIONS
OUTPUT POWER
• 4 Output Channels
• 175W/ Ch @ 8Ω
• 350W / Ch @ 4Ω
• 480W / Ch @ 2.7Ω
• 360W / Ch @ 2Ω
• 700W / Ch @ 8Ω Bridged
• 650W / Ch @ 4Ω Bridged
• 350W (Optional Hi-Z Card) / Ch @ 70
AMPLIFIER INPUTS
• 4 Dante Inputs (optional)
• 4 Analogue Input
AMPLIFIER OUTPUT
• 4 Dante Outputs (optional)
• 4 Link Outputs
• 4 Power Outputs
CONNECTORS
• XLR Connectors for Signal Input and Link
Outputs
• Speak-on Connectors for Channel Outputs
• 2 x Ethernet Ports (Dante)
SYSTEM
SPECIFICATIONS
• Input CMRR > 60 dB
• Freq. resp.: 3Hz-30kHz ±3dB
• THD : better than 0.1% (1 kHz)
• THD : better than 0.18% (FR)
• Nominal system gain: 26/32dB
• Input Impedance — 20kΩ
• >400 Damping Factor, 1kHz, 8
• Signal Limiters Present
• Protection Against Short Circuit /
Temperature / DC Outputs
• Mains In-rush Control present
CONTROLS &
MONITORING
• LED Strip for Output Metering
• LED Indicators for Network & AES Audio,
Remote Connection and Output Bridge
Indicators
• Rotary Knobs for Channel Volume
POWER CONSUMPTION
• 2A Power Consumption, Nominal @
240V, 4 Ohms
• 5.6A Power Consumption, Nominal @
120V, 4 Ohms
• See Power Consumption & Thermal
Emission Chart for a detailed specification
OPERATING PARAMETERS
• Operating positions : To be used in a
rack-mount case with no front to back airflow
restriction
• Maximum permitted ambient temperature
(Ta max) 45° C (113° F)
• Minimum permitted ambient temperature
(Ta min): 0° C (32° F)
• 32 dB Fan
AESTHETIC SPECIFICATIONS
• Black Aluminum Chassis
• Matte Star White Front Panel
SIZE
• Product : 88 x 482 x 458 mm (H x W x D)
• Product : 3.4 x 19 x 18 inch (H x W x D)
• Packed individual
WEIGHT
• Net : 4 Kgs
• Net : 9 Lbs
SHIPPING INFORMATION
• Carton Size
163 x 556 x 533 mm (H x W x D)
6 x 22 x 21 inch (H x W x D)
• Gross Weight : 4.5 Kgs / 9.261 Lbs
• Packed : Individually
DOWNLOADS CENTRE
Datasheet
