Rolls HR251 Overview
Audio engineers looking to power audio / visual speakers will be impressed with this compact Rolls HR251, a dual-channel 100W (50 + 50W) power amplifier that's ideal for mixing audio in halls, projection equipment, small presentations, and other applications.
The amplifier features two XLR and stereo RCA inputs. A pair of pluggable Phoenix connectors will accommodate bare speaker wire. The front panel includes a pair of channel level control knobs, a power switch, and an LED power indicator. The internal glass epoxy circuit board and powder coated steel chassis are well made and designed to last.
Balanced XLR and unbalanced stereo RCA inputs
Volume controls for each channel
In the Box
- Rolls HR251 2-Channel 50 + 50W Power Amplifier
- Power Supply
- Limited 1-Year Manufacturer Warranty
Rolls HR251 Specs
Amplifier
Form Factor/Type |
Tabletop |
Number of Channels |
2 Input |
Power Rating |
2 x 50 W |
Load Impedance / Voltage |
4 Ohms per Channel |
Performance
Frequency Response |
20 Hz to 25 kHz ±3 dB |
Input Sensitivity |
28 mV |
I/O Impedance |
Stereo RCA/XLR Line Input: 10 Kilohm (Balanced or Unbalanced) |
Max Gain |
30 dB |
VCA Control |
None |
THD |
0.05% (Typical) |
EQ |
None |
Connectivity
Audio I/O |
2 x XLR 3-Pin Balanced Line Input 1 x Stereo RCA TS Unbalanced Line Input 2 x Push Terminal 2-Pin Amplifier Output |
Digital Audio I/O |
None |
Network I/O |
None |
Speaker Outputs |
2 x Push Terminal 2-Pin Main |
Number of Module Slots |
None |
Media/Memory Card Slot |
None |
Power
DC Input Power |
24 VDC |
AC Outlet |
None |
Physical
Display & Indicators |
1 x LED (Power) |
Dimensions |
6.5 x 4.0 x 1.5" / 165.1 x 101.6 x 38.1 mm |
Packaging Info
Package Weight |
2.985 lb |
Box Dimensions (LxWxH) |
10 x 7.3 x 4.4" |
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