Get more depth with mono amplification
Enjoy the deep sound quality of analog sound sources
In the Astro Electronics Project, we have revamped the lineup of all advanced grade amplifiers to mono specifications. With the mono amplifier of stereo power amplifier, the preamplifier also adopted mono.The main purpose of the mono preamplifier is to convert the stereo signal into mono and play it without interfering with each other by dividing the signal left and right.
Especially in the use of mono sound source and mono recording playback,The mono signal is properly coupled to minimize noise and interference to achieve clear regeneration. This allows you to enjoy the original quality of the mono sound source.

Beautifully mirrored1.6mm thick high quality stainless steel chassis and parts mounting medium steelClear FinishThe robust structure of 1.5mm thick anoxic copper prevents resonance from inside and outside, contributing to high sound quality with high transparency without noise. (The photo below is power amplifier)
Transformers adopt original transformers that pursue sound quality without compromise while keeping prices low. High-grade gold plated terminals are used for input and output terminals.
Many analog sound sources, such as analog records and analog cassette tapes, are in mono form. You can enjoy the deep sound quality of the analog sound source using the mono preamplifier.
Audio enthusiasts and ensuisers may stick to playing mono music.AST-2000MVIPSP is an important component to meet such demand.
AST-2000MVIPSP can adjust the voice balance during mono playback. The attenuator uses 41 contacts to enable more accurate control.
The AST-2000MVIPSP delivers optimal performance not only for stereo sound sources, but also for mono sound sources and analog playback. It will be used to accurately reproduce the characteristics of mono music and provide a rich musical experience.
Use vacuum tube | 6SL7GT×3 |
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Use Transformer | AST-55PK×1 ST-5H-60M |
Connection Circuit Bias | 3rd stage cathode follower type |
Frequency Characteristics | 10Hz~100KHz |
Residual noise | Below / |
Distortion | 0.23% / 1W |
Input Impedance |
41 Step A Type 100KΩ
|
Input/Output | PHONO-CD-LINE1-LINE2, OUTPUT: 1-2-3 |
Size | W 270 x D425 x H150mm |
Weight | About 9.6kg |








