- Purity in Analog. Masterpiece in Tube Heritage.
Engineered for uncompromising audiophiles, the MUZISHARE R90 vacuum tube preamplifier bridges the gap between pure technical transparency and rich, emotional warmth. Featuring a hand-selected tube topology, dedicated MM/MC phono stage, and precision tone controls, it delivers a velvet-smooth, holographic soundstage designed to elevate your reference stereo system to absolute perfection.
- Product Features
1. Features a power transformer built with a Z11 core, utilizing high-end, specialized manufacturing techniques and premium materials.
2. The main preamplifier circuit employs two 12AX7 vacuum tubes and four 6KE8 vacuum tubes.
3. The phono stage utilizes two 6KE8 vacuum tubes integrated with an RIAA equalization circuit, supporting both MC (Moving Coil) and MM (Moving Magnet) cartridges.
4. The high-voltage power supply incorporates a 17BE3 vacuum tube for rectification and a 12DT5 vacuum tube for voltage regulation.
5. Includes selectable fixed-frequency boost (for high and low ranges) and a “direct” (bypass) mode.
6. Offers six sets of signal inputs: MC-H, MC-L, MM, CD, AUX, and Balanced.
7. Equipped with two sets of RCA outputs and one set of balanced outputs.
8. Features a startup delay for high-voltage supply and an audio muting delay (approximately 30 seconds).
9. Utilizes high-quality potentiometers from the Japanese brand ALPS.
10. Includes external output level indicator meters.
11. Delivers a sound that is smooth, pure, and mellow—ideally suited for a wide variety of musical genres. - Technical Specifications
Main Amplifier Circuit Specifications
Gain: 16dB
Harmonic Distortion: 1% (1kHz)
Frequency Response: 15Hz–30kHz (-1.5dB)
Input Sensitivity: 180mV
Input Impedance: 100kΩ
Output Impedance: 5kΩ
Signal-to-Noise Ratio: 95dB
Left/Right Output Balance: <0.5dB
PHONO Specifications
MM: 50dB | MC: 72dB
Harmonic Distortion: 0.08% (1kHz)
RIAA Accuracy: 0.25dB (20Hz–20kHz)
Input Sensitivity: MM: 6mV | MC: 0.5mV
Input Impedance: MC: approx. 100Ω | MM: approx. 50kΩ
Signal-to-Noise Ratio: MC: 78dB | MM: 85dB
General Specifications
Power Consumption: 65W
Net Weight: 13kg
Dimensions: 430mm × 393mm × 125mm
Vacuum Tubes Used: 12AX7 × 2, 6KE8 × 6, 12DT5 × 1, 17BE3 × 1
Power Supply Voltage: ~115/230V ±5% (50Hz)
