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Guitar Amplification

US-Series Professional Power Amplifiers:
US-1200US-1800US-3000US-4000 — US-5000 — US-6000
The latest additions to the industry-proven US-Series are two professional 3U heavy-duty power amplifiers for the most challenging applications. The US-5000 and US-6000 are built on a rugged, heavy gauge 3U steel chassis with a sturdy aluminum front panel. The amplifiers use advanced circuitry and a well-designed PCB layout to ensure quality sound and enhanced reliability. Large dual aluminum heatsinks and an oversized toroidal transformer, combined with comprehensive protection circuitry and dual large variable speed fans provide worry-free and reliable operation in the most demanding environments.

Download the US-Series Amplifiers Instruction Manual
< 5.1mg PDF file>
US-5000 — US-6000
Click the amplifier to enlarge

US-Series Professional Power Amplifier Features: US-5000 & US-6000
Up to 5500 watts in densely packed 3U enclosure
Rugged heavy gauge steel enclosure with sturdy aluminum front panel for stability and
increased longevity
High-current toroidal transformers for increased 2-ohm power output
21-position gain control knobs for consistent settings
Selectable STEREO, PARALLEL MONO and BRIDGED MONO modes for flexibility
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
Defeatable clip limiters to reduce distortion without sacrificing peak performance
Defeatable 30/50Hz sub-sonic filters to protect speakers and increase headroom
Balanced combo XLR and 1/4" TRS input connectors and link XLR output connectors
Both binding posts and SpeakonTM output connectors
Low-noise cooling fans with continuous variable speed and highly efficient front-to-rear forced
air cooling design
Replaceable open cell foam air filters with easy access through front panel
Dimmable blue LED strips on front panel
Soft start circuit to reduce in-rush AC current

US-5000 Rear Controls US-6000 Rear Controls
Amplifier Specifications
<< Stereo Both Channel Driven @ 1kHz, 1%THD >>
8 Ohms
900 watts
1150 watts
4 Ohms
1500 watts
1900 watts
2 Ohms
2150 watts
2750 watts
<< Bridged Mono @ 1kHz, 1%THD >>
8 Ohms
3000 watts
3800 watts
4 Ohms
4300 watts
5500 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
3-tier class H
Dual continuously variable speed fans, front to rear
Short circuit, thermal, current limit, DC offset, RF protection,
AC soft start with inrush current limit, turn on/off muting
Input: Combo female XLR & 1/4 TRS jack. Link: Male XLR
Output: Both 5-way biding post and Speakon™
Front: Power on/off switch, volume controls for each channel
Rear: Mode switch (stereo / parallel / bridge), HPF 30Hz/50Hz/Off,
Limiter on/off, LED STRIPS on/dim/off
Power, parallel, bridge. Each channel: Signal, -20dB, -10dB, clip, protect
Power Requirements
120/230V 60/50Hz factory configured
AC consumption
Both channels driven at 4 Ohm load, at 120Vac (for 230V divide by 2)
AC connect   120V: fixed cord - NEMA 5-15 plug   120V: fixed cord - NEMA 5-20 plug

230V: IEC inlet on chassis; power cord with CEE7/7 plug
Typical level, 1/8
power pink noise
Severe level, 1/3
power pink noise
19" (482mm) x 5.25" (132mm) x 19.3" (492mm)
Net weight
76.2lb (34.6kg)
81.5lb (37kg)
US1200 US1800 US3000 US4000
B-52 Professional, 3383 Gage Ave, Huntington Park, CA, 90255
Toll Free (US): 800-344-4384 I Ph: 323-277-4100 Fax: 323-277-4108
Copyright 2011: ETI Sound Systems, INC