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Rolls RA2100b Stereo Power Amplifier - 70W per Channel into 8 Ohms with 25/70V Audio Distribution
The RA2100b is a stereo power amplifier, utilizing MOSFET drivers in a voltage and current gain circuit. It is intended for professional audio applications such as recording studios and small live venues.
The RA2100b is designed to drive 4 or 8 ohm speakers, but will also distribute audio to 25V speakers (individual channels) or 70V speakers (in bridged mode.) It features a bridging switch, one-second power-up delay and LED power-output meters. The unit includes a special high performance transformer, and a fused power line. The MOSFET output stage is fault protected which allows the amplifier to forgive momentary output shorts and has over-temperature protection. The amplifier is convection cooled, hence no fan noise.
- Stereo power amplifier
- Each channel offers both 4 and 8 ohm, or 25V (both channels) and 70V (bridged) operation
- MOFSET drivers in a voltage and current gain circuit
- Four LED power-output meters per channel
- Fault protected outputs
| Power Rating |
Stereo @ 4 ohms: 100 watts RMS per channel Stereo @ 8 ohms: 70 watts RMS per channel Bridged @ 8 ohms: 200 watts Bridged @ 70V: 200 watts |
| Damping Factor | >150 |
| Input Sensitivity | <1 VRMS for full output |
| Input Impedance | 10k ohms balanced |
| Gain | Not specified by manufacturer |
| Frequency Response | 50Hz to 25kHz +/-1dB |
| Signal-to-Noise Ratio | >106dBu |
| Total Harmonic Distortion (THD) | <0.08%, 1kH @ 1 watt |
| Input Connections | 2 x 1/4" TRS phono, 2 x RCA coaxial |
| Output Connectors | 2 x Pair 5-way binding posts, 2 x 1/4" TS phono |
| Controls Front Panel |
2 x Rotary level control Power switch |
| Controls (Rear) | 1 x Stereo/Mono Bridge switch |
| Indicators |
1 x 4 LED level metering per channel 1 x Protect, 1 x Power LED |
| Camera Resolution | Convection |
| Power Consumption | Not specified by manufacturer |
| Dimensions | 19" x 7 1/2" x 3 1/2" |
| Weight | 12 lbs |
| Specialties | One second turn-on delay |
REVIEWS
Reviewed by 1 customer
Displaying review 1
Pros
- Easy To Use
- Excellent Sound
- Powerful
Cons
Best Uses
- Performances
Comments about Rolls RA2100b Amplifier:
In courtroom to replace a 32 year old unit.
Displaying review 1
Cables
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- Original: $9.95
- Save: $0.99
- Price: $8.96
Speaker Cables
- Price: $31.50
- Add to cart for lower price
Racks
- Price: $84.99
Cases & Protection
- Price: $129.99
What's in the Box
- External Power Adapter
- One Year Warranty
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