MUZISHARE R90,Tube Preamplifier, MM/MC & Balance Inputs, RCA and Balance Outputs, with Remote Control, AC115 and AC230 Switchable 2025 - silver

• High-Qquality Construction: The power transformer utilizes a Z11 iron core, incorporating advanced specialized techniques and premium materials, along with a Japanese AL*PS high-end potentiometer and a peripheral output level meter function.
• Tubes Configuration: The preamplifier stage incorporates two 12AX7 vacuum tubes and four 6KE8 vacuum tubes. The phono section employs two 6KE8 tubes in conjunction with an RIAA equalization network to support both MC and MM compatibility. For the high-voltage power supply, a 17BE3 vacuum tube is utilized for tube-based rectification, while a 12DT5 tube serves as the voltage regulation component.
• Six Signal Input Channels: MC-H, MC-L, MM, CD, AUX, and BALANCED.The pre amplifier features six dedicated signal input channels, providing versatile connectivity options for a wide range of audio sources.
• Outputs: This unit is equipped with two dedicated RCA output channels and a balanced output channel, specifically incorporated to expand connection options and improve signal transmission performance.
• The audio output exhibits a smooth, transparent, and refined tonal quality, making it highly suitable for the reproduction of a diverse range of musics.

Upon system startup, the high-voltage activation and audio muting functions are intentionally delayed for a period of approximately 30 seconds to ensure stable initialization and prevent transient disturbances.

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 and Right Output Balance: <0.5db
Power Consumption: 65W
Net Weight: 13 KGs

Gross Weight: 16.5 KGS
Vacuum Tubes: 12AX7x2, 6KE8x6, 12DT5x1, 17BE3x1
Power Supply Voltage: AC115/230V+5%(50HZ-60HZ)

Phono Stage Spec:
Gain: MM:50dB MC:720B
Harmonic distortion: 0.08%(1KHZ)
Frequency response: RIAA bandwidth: 0.25dB 20Hz to 20KHZ
Input sensitivity: MM:6mV MC:0.5mV
Input impedance: MC:100Ω MM: 50KΩ
Signal to noise ratio: MC:780B MM:85dB