The MP-1’s balanced architecture offers extremely low noise and excellent linearity. Its output stage is designed as a pure Class A amplifier, enabling high bias current while maintaining low crossover distortion. The MP-1 is therefore able to guarantee a wide frequency response and dynamic range for sound reproduction as close as possible to the original audio file.
Signal amplification within MP-1 is essentially achieved by 4 independent transistors. Each channel has two transistors working together to amplify the signal in balanced mode. Even in RCA, the signal is converted to a bipolar signal to suppress common-mode noise and enhance dynamics.
Inside the MP-1 preamplifier are 4 networks of 64 resistors for precise volume control. 32 fully sealed reed relays complete the package. This volume control system minimizes any negative impact on sound quality and ensures excellent coherence between the two channels. The operating noise of the relays is virtually inaudible, for smooth, undisturbed volume control.
The MP-1’s power supply stage is made up of two 60W toroidal transformers feeding each preamplifier board separately. Filter capacitors from Mundorf’s M-Lytic AG series then ensure a reliable, constant current. The special aspect of the transformers chosen by Matrix is that they feature square copper wires for increased conductive surface area, higher current capacity and lower resistance
One of the advantages of the MP-1 is the ability to independently set attenuation and volume compensation for each input. In addition, the XLR outputs can be operated simultaneously or separately. In the case of separate outputs, each output volume is individually adjusted for best results when using multiple amplifiers and speakers. If you use both XLR outputs simultaneously, you can easily set up a bi-amplification system.
1 | RCA stereo output | 5 | 2x Balanced stereo XLR output |
2 | 3x XLR balanced input | 6 | 3x RCA stereo output |
3 | Trigger IN/OUT | 7 | ON/OFF switch |
4 | Service port | 8 | Fuse |
5 | 2x Balanced stereo XLR output | 9 | IEC power supply input |
Technical Specifications | |
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Product type | Preamplifier |
Inputs | 3x RCA stereo 3x XLR stereo balanced |
Outputs | 1x RCA stereo 2x XLR stereo balanced |
Input impedance | RCA: 20kΩ XLR: 40kΩ |
Output impedance | RCA: 20Ω XLR: 40Ω |
Max. input level | RCA: 4.5V XLR: 9V |
Max. output level | RCA: 18Vrms XLR: 36Vrms |
Frequency response | 20Hz-20kHz (±0.1 250kHz @ -3dB) |
Dynamic range | RCA: 125dB @ A-weighting / 120dB @ No-wt XLR: 129dB @ A-weighting / 125dB @ No-wt |
THD+N | RCA: <0.00040% @ A-weighting / <0.00040% @ No-wt XLR: <0.00015% @ A-weighting / <0.00020% @ No-wt |
Crosstalk | RCA: -130dB XLR: -140dB |
Gain | +12dB |
Volume control | 100 step |
Trigger | In: DC 6-12V < 10mA Out: DC 12V/50mA max. |
General | |
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Power supply | AC 220V-240V 50/60Hz |
Standby power consumption | < 1W |
Max. power consumption | < 70W |
Weight | 15.7kg |
Dimensions | 430 x 349 x 106mm |
Color | Silver |
Package | 1x Matrix MP-1 preamplifier 1x Matrix RM4C remote control 1x Trigger cable 1x Power supply cable |
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