Up for sale is a used RD Audio 55.4AB. It is rated at 55 x 4, but will do closer to 75 x 4. The amp is in good condition and works perfectly. It will produce a very clean signal. I usually ship very fast, box up the item very well, and have tried to build a good repuation on here. Please look at my feedback thread. Shipping is free to anyone in the lower 48 states. This is a solid amp that will make your speakers shine. Here are the specs.
The RD series amplifiers deliver a ton of power with a low distortion rate. We used the best parts we could find to give you a top quality amplifier that anyone would be proud to show off. With their clean looks and sleek finish, they’ll look good in any install. So whether it’s an elegant sound quality setup or a high powered SPL vehicle, the RD series amplifiers have you covered.
Features
4/3/2 channel bridgeable class-AB amplifier
MOSFET PWM power supply
4 ohm bridged or/and 2 ohm stereo
18dB octave crossover slope
Variable crossover frequency with FULL/LPF/HPF selectable switch
Multi-way protection circuitry (Thermal/over current/speaker short/speaker DC protection)
RCA line input and output
Tested voltage & THD: 14.4V & less than 0.05% THD
Operating voltage : DC10V~16V power input
MSRP
$299.00
Specifications
RMS power, 4 ohm stereo 55w x 4ch
RMS power, 2 ohm stereo 75w x 4ch
RMS power, 4 ohm bridged 150w x 2ch
Signal to Noise Ratio
Low pass crossover 50hz ~ 500hz
High pass crossover 50hz ~ 500hz
Bass boost @ 45Hz -
Frequency response 10Hz ~ 30KHz (+/-1dB)
T.H.D @ 4 ohms
Channel separation 75dB
Fuse rating 25A x 2
Input sensitivity 200mV~6V (+/- 5%)
Dimensions 222(W) x 52(H) x 230(L)mm
Click for product manual ››
[/img]
[/img]
[/img]
The RD series amplifiers deliver a ton of power with a low distortion rate. We used the best parts we could find to give you a top quality amplifier that anyone would be proud to show off. With their clean looks and sleek finish, they’ll look good in any install. So whether it’s an elegant sound quality setup or a high powered SPL vehicle, the RD series amplifiers have you covered.
Features
4/3/2 channel bridgeable class-AB amplifier
MOSFET PWM power supply
4 ohm bridged or/and 2 ohm stereo
18dB octave crossover slope
Variable crossover frequency with FULL/LPF/HPF selectable switch
Multi-way protection circuitry (Thermal/over current/speaker short/speaker DC protection)
RCA line input and output
Tested voltage & THD: 14.4V & less than 0.05% THD
Operating voltage : DC10V~16V power input
MSRP
$299.00
Specifications
RMS power, 4 ohm stereo 55w x 4ch
RMS power, 2 ohm stereo 75w x 4ch
RMS power, 4 ohm bridged 150w x 2ch
Signal to Noise Ratio
Low pass crossover 50hz ~ 500hz
High pass crossover 50hz ~ 500hz
Bass boost @ 45Hz -
Frequency response 10Hz ~ 30KHz (+/-1dB)
T.H.D @ 4 ohms
Channel separation 75dB
Fuse rating 25A x 2
Input sensitivity 200mV~6V (+/- 5%)
Dimensions 222(W) x 52(H) x 230(L)mm
Click for product manual ››
