Magnat MR 750: Fully equipped stereo receiver

Magnat MR 750 includes: an integrated amplifier with a tube pre-amplifier, a phono preamplifier, a DAC with HDMI ARC and SPDIF inputs, an FM/DAB tuner, a Bluetooth receiver version 5.0 with aptX, a headphone amplifier and even a three-band equalizer. The heart and fiery motor of Magnat MR 750 are two dual ECC81 triodes operating in the pre-amplifier stage. Before and after are solid transistors and digital circuits, but it is the pre-amplifier that determines the sound character of the device.

After the tubes, a transistor output stage on discrete elements is organized, giving out 100 W per channel at a load of 4 Ohms. The Magnat MR 750 amplifier is powered by a powerful toroidal transformer, which has a shield to eliminate the negative impact on the stereo receiver circuits. Before the preliminary stage, the path can be both analog and digital. The built-in phono corrector works with MM-type heads, has a rumble filter and is organized on an operational amplifier. SPDIF inputs are served by one of the best, in my opinion, modern digital receivers AKM AK4113.

The section of the board after the digital receivers is assembled on the already familiar WM8740 and NE5532 microcircuits, i.e. it is completely analogous to the DAC and analog output circuit of the CD player. This allows us to make a simple and obvious conclusion: when connecting these components, you need to puzzle over finding a high-quality analog interconnect cable, SPDIF will be equivalent in quality at best, but only under very good circumstances. If you do not like bright displays or you hear their negative impact on the sound on each component, then know that there is a special button for controlling the display brightness (it also turns it off if necessary).

The Magnat MR 750 receiver has a “Mono” button. This is useful not only when using the FM tuner in conditions of weak signal reception, but also when listening to early stereo recordings, in which sound engineers diligently “shove” the musicians into different speakers and, in my opinion, did not think at all how this would be perceived during playback. I would prefer to have such a button on all devices on which I listen to old recordings. Balance adjustment and a three-band equalizer are the dream of a hi-fi fan of the last century. Perfectionists, of course, will immediately feel the Direct button just above and use it.

Specifications of Magnat MR 750

Nominal power: 2×100 W at 4 Ohm, 2×75 W at 8 Ohm
Frequency range: 6-90000 Hz (-3 dB), 20-20000 Hz (± 0.3 dB)
Subsonic filter: 16 Hz, 18 dB per octave
Signal-to-noise ratio: less than 104 dB on all inputs except phono preamplifier (82 dB)
Tuner: FM/DAB/DAB+ Preamplifier tubes: ECC81 or 12AT7
Digital inputs: 1 x Toslink, 1 x Coax, 1 HDMI ARC
Sampling frequencies: 44.1/48/88.2/96/176.4/192 kHz
Bit depth: 16/24 bit
Bluetooth: 5.0 Qualcomm aptX HD, 2402 – 2480 MHz
Dimensions: 433 x 116 x 316 mm
Weight: 7.4 kg.

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