Designed to provide outstanding performance on any stage.

The B-52 US-1200 Power Amp has low noise, low distortion circuitry, and high current output stages. B-52 uses oversized toroidial transformers and large filter capacitors to deliver super-clean, fist-pumping output even when driving 2-ohm speaker loads.

The stellar looking US-Series professional power amplifiers are made to outperform in any setting. B-52 US-series power amplifiers use the most reliable linear output devices, which provide ultralow distortion and ruler-flat frequency response. Backed by a 3-year warranty.

Features

Compact 2-rack size
High-current toroidal transformers for greater 2-ohm power
21-position detent gain control knobs for consistent settings
Front panel LED display: Power, bridge and parallel LEDs and signal,
20dB, -10dB, 0dB, clip and protect LEDs for each channel
Protection: short circuit, output current limiting, thermal, DC offset, turn on/off muting, RF protection and circuit breaker
Clip limiters reduce distortion without sacrificing peak performance (defeatable on US-3000/US-4000)
Sub-sonic filters protect speakers and increase headroom (defeatable)
Balanced combo XLR and ¼" TRS input connectors and link XLR output connectors
5-Way binding post and Speakon™ outputs
Low-noise cooling fans with continuously variable speed and highly efficient front-to-rear forced air keeps the amplifiers cool

Get the super-clean power you need for any gig.

Amplifier Specifications

Stereo Both Channel Driven @ 1kHz, 1%THD

8 Ohms - 210 watts
4 Ohms - 330 watts
2 Ohms - 430 watts

Bridged Mono @ 1kHz, 1%THD

8 Ohms - 650 watts
4 Ohms - 850 watts

Input Sensitivity

1.23 Vrms (+4 dBu) for full power @ 4 Ohms

Input Impedance

30K ohms Balanced/15K ohms Unbalanced

Frequency Response

0/-0.5dB: 20Hz - 20kHz; 0/-3dB: 5Hz - 60kHz

Signal to Noise Ratio

Better than 100dB (20Hz - 20kHz)

Distortion (SMPTE-IM)

Less than 0.03%

Output Circuitry

AB

Cooling

Continuously variable speed fan, front to rear

Protection

Short circuit, thermal, current limit, dc offset, AC current inrush,RF protection, subsonic, turn on/off muting

Controls

Front: Power on/off switch, volume controls for each channel
Rear: Mode switch (stereo / parallel / bridge), HPF on/off,
Limiter on/off (US3000/4000)

Indicator

Power, parallel, bridge. Each channel: Signal, -20dB, -10dB, clip, protect

Power Requirements

115/230V 60/50Hz factory configured

AC consumption

Both channels driven at 4 Ohm load, at 115Vac (for 230V divide by 2)

Typical level, 1/8 power pink noise

4.5A

Severe level, 1/3 power pink noise

7A

Dimensions

19” (482mm) x 3.5” (88mm) x 17.2” (438mm)

Net weight

28lb (13kg)