RIAA MM/MC PHONO PREAMPLIFIER

The Audio-GD LP-1 MM/MC is a high-performance RIAA phono preamplifier, compatible with MM or MC cartridge turntables, which offers a careful design that corrects the defects common to many preamplifiers of this type. Here, a low-pass filter (75uS) at the input allows a more linear response between 1kHz and 20kHz.

All of the LP-1 MM’s circuitry is designed to provide smooth and accurate sound reproduction. This includes a regenerative power supply, itself composed of 4 Class A PSUs, ACSS circuitry, and quality components such as the 2SK170 FETs in input and output buffers.

SPECIFICATIONS
Product type	RIAA Phono preamplifier
Phono compatibility	MM or MC
Inputs	1x Stereo RCA
Outputs	1x Stereo RCA 1x Stereo XLR 1x ACSS
SNR	> 80dB
THD	< 0.05% (A-Weighting)
Frequency response	20Hz – 20kHz (< -1dB)
Gain	+38dB @ 1kHz +58dB @ 20Hz
Output voltage	400mV @ 1kHz, 5mV
Output impedance	10Ω @ RCA > 1kΩ @ ACSS
Input impedance	47kΩ

GENERAL
Supply voltage	220-240V AC 50/60Hz
Consumption	10W
Weight	~5kg
Dimensions	240 x 360 x 85mm
Package	1x Audio-GD LP-1 MM 1x Power cable

RIAA PHONO MM /MC PREAMP

MC phono preamps have higher gain than MM phono preamps because of the low signal level of MC cartridges compared to MM cartridges. MC phono preamps usually have a lower noise floor and better noise characteristics than MM phono preamps because of the low signal level of MC cartridges compared to MM cartridges.

The upon diagram show the different instruments frequency band . For example, if playing piano music recorder, cause by the larger different distortion on the frequency band, you can hear the low frequency band like playing a brand A piano, the middle frequency band like playing a brand B piano, and the high frequency brand like a brand C, the music recorder like the different brand pianos playing together.

Regenerative power supply

The regenerative power supply can block most disturbances from the power line to provide a clean and stable signal to the audio circuits. For this purpose, the LP-1 MM circuitry uses regenerative transformers, Class A power supplies, a wave generator and gain amplifiers. In addition, each audio circuit has its own power supply.

Gewicht	6 kg
Größe	240 × 260 × 85 mm
Brand	Audio-GD

2 Bewertungen für AUDIO-GD – LP-1HE MM/MC – RIAA phono preamplifier

Bewertet mit 4 von 5

Jan – Juni 8, 2021

Good device, what you may expect from Audio-GD
Only point that could be even better is the S/N ratio.
But it’s much better than I ever got it.
Bewertet mit 5 von 5

Pierre-Olivier (Verifizierter Besitzer) – April 11, 2021

LP1 phono preamp sounds fantastic…. the sound is very much defined and spatialized (more than with the Moon I had before), bass are more present as well and I’m very happy I bought it.
Audio GD is definitively a great brand…

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AUDIO-GD – LP-1HE MM/MC – RIAA phono preamplifier