According to Merriam Websters Dictionary, primo is considered to be Of The Finest Quality. Living up to that standard we proudly present another entry in the Massive Audio PRIMO series of Class D Amplifiers, designed and engineered in the USA. This PRIMO PX4R is a multi-channel Amplifier that easily delivers up to 250 Watts RMS to each of 4 Channels @4and 700 Watts to 2 Channels bridged @4in a rather small footprint. All PRIMO seriesmps use Mil Spec PCBs with Surface Mount Devices.
Inside you will discover full MOSFET high grade switching devices andou can be assured your investment will last as a result of our 5 way protection circuitry and LED Clipping Indicators for front & rear. Our built-in OEM Line Converter enables installation of this Amplifier in any system as a result of its input sensitivity adjustable up to 10V RMS with our Auto Turn On circuit and theres a 12 Volt remote output for external 12 Volt devices. Adding to its street cred is its compliance with the Consumer Technology Associations CTA 2006 Standards for Car Audio Amplifiers. Not only does it comply it actually outperforms these stringent standards All models are pretested and will outperform their published CTA006 rating. I.C.P. (In Car Performance) is the main design goal./p>
Outside you will be impressed by a smooth polished aluminum surface with our logo glowing radiantly in blue, announcing to the world youre in possession of PRIMO equipment. The end caps feature a variety of individual adjustments for front & rear levels, X1 / X10 Freq. Control Button for HPF / LPF adjustments, all to provide maximum system flexibility, plus a 0 12 dB variable Bass Boost on the rear channels. Additionally, the PX4R supports a “Docking Port” to plug in an optional custom matching 4 Faradailcap Booster (RCP)./p>
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FEATURES:
- Full Range Crossover Mode Adjustable Between 10Hz – 200Hz or X10
- X1 / X10 Freq. Control Button for HPF / LPF Adjustments
- Extreme Power in a Small Footprint
- Low Distortion Full Band Width for Sound Quality Tuning
- Mil Spec Double Sided PCB design with SMD parts
- Built-in noise reduction circuitry
- Full MOSFET with High Grade switching devices
- Built-in Auto Sensing turn on function (Hi-Inputs)
- 12V Remote Output for External Devices (Hi-Inputs)/li>
- Next Generation Advanced 5 Way Protection Circuitry
- Illuminated Logo
- Designed and Engineered in U.S.A.
- CTA 2006 Standard Compliant/li>
SPECIFICATIONS:
| 2hm RMS | 350w x 4 |
| 4 Ohm RMS | 250w x 4 |
| 4 Ohm Bridged | 700w x 2 |
| Input Level | 0.4 ~ 10V (High or Low) |
| Freq. Response | 10Hz ~ 20kHz |
| LPF | 10Hz ~ 200Hz / x1 – x10 |
| SubSonic (HPF) | 10Hz ~ 200Hz / x1 – x10 |
| THD at 4 Ohm Load 30% Rated Power | <0.03% |
| S/N Ratio | >110dB |
| Bass Boost | Yes |
| Minimum Load | 2 Ohm |
| Gain Remote | n/a |
| Dimensions | 10.15 (in) x.9 (in) x.9 (in) |




















