VTPH-2 Vacuum Tube Phono Preamplifier Owners Manual
Please read the Owner’s Manual Completely BEFORE operating the unit
15
Tube complement: (Available in two 5 tube factory set configurations)
(2 3 12AX7, 3 3 12AT7)
or
(4 3 12AX7, 1 3 12AT7)
Gain:
Moving coil mode: (2 3 12AX7, 3 3 12AT7) 64 dB
(4 3 12AX7, 1 3 12AT7) 69 dB
Moving magnet mode: (2 3 12AX7, 3 3 12AT7) 43 dB
(4 3 12AX7, 1 3 12AT7) 48 dB
Frequency response: RIAA 20 Hz to 20 kHz 6 0.1 dB
Signal-to-noise ratio: 80 dB, A weighted, inputs shorted
(noise level will be tube dependent)
Output impedance: 500 ohms nominal (12AT7 “V5” dependent)
Input impedance:
Moving coil inputs: Infinite impedance with no load resistors
connected
NOTE: load resistors can be connected externally via
RCA connectors or soldered in internally
Moving magnet inputs: 47,000 (47k) ohms, 100 pF
Absolute polarity: Non-inverting in both moving coil and
moving magnet modes
Toroidal power transformer
Power requirements: U.S.: 115 VAC 60 Hz, 30 VA
Fuse: 1⁄2 amp 250 volt slow blow
Export: 230 VAC 50/60 Hz, 30 VA
Fuse: 1⁄4 amp 250 volt slow blow
Overall dimensions: 17.60 wide 3 40 high 3 100 deep
Warranty: 3 years, parts and labor 90 days for tubes
Technical Specifications
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