Line Magnetic LP-33 Tube Phono Preamplifier. Super versatile unit that operates with either MM or MC cartridges. Unit has separate outputs for cartridge type and a selector for Low or High Output. Uses 3 x 12AX7 tubes. 2 piece preamp with separate power supply and interconnect cable. Power switch is located on power supply and RCA input and output are located on the preamp.
Wonderful sounding phono stage and only selling to consolidate this unit and custom tube rectified, 6SN7-based line stage.
The power supply and the output stage are encapsulated and installed separately on the phono amplifier to avoid and lower the disturbance between each other.Specially take nickel slices EI-19 with highly magnetic permeability, to make small signal amplified at many times.
Well selected and matched tubes. Tubes we chose are 3*ECC803S(JJ) in audio amplification.
German Mcap coupling capacitors and Janpanese Nichicon & Rubycon filtering capacitors have been applied.
Input sensitivity: MM: 6mV MC(H): 1mV MC(L): 0.5mV
Frequency response: 20Hz ~20KHz(-1.5dB)
Dimensions（W*D*H): 302*131*139mm (main body）
Power output: ~220V ± 5%（50Hz）
SNR: MC: 60dB MM: 70dB
Gain: MM: 50dB MC(H): 66dB MC(L): 72dB
Separating degree of two channels: MM: -65dB MC: -50dB
Power Requirements: ~ 230VAC ± 5% (50Hz)
Input impedance: MC: 47Ω(L) 100Ω(H) MM: 50KΩ Output impedance：10KΩ