Herron Audio Vacuum Tube Phono Preamplifier
VTPH-1 Technical Specifications
VTPH-1 Technical Specifications
Tube complement: 4 x 12AX7WA/B, 1 x 12AT7WC
Frequency Response: RIAA 1 Hz to beyond 100 kHz,
20 Hz to 20 kHz +/- 0.1dB
Gain: VTPH-1MM 44dB nominal at 1 kHz,
channels matched to within 0.05 dB
VTPH-1MC PLUS 66 dB nominal at 1 kHz,
channels matched to within 0.05 dB
Signal-to-Noise Ratio: VTPH-1MC 80 dB, A weighted, inputs shorted,
AC polarity set
Output Impedance: 500 ohms nominal (recommended load 50 k ohms
or higher)
Input Impedance: VTPH-1MM 47,000 ohms, 100 pF
VTPH-1MC PLUS 47,000 ohms, 100 pF plus optional
internal load resistors at input terminals
Absolute Polarity: VTPH-1MM noninverting
VTPH-1MC PLUS noninverting
Power Supply: 78,000 µF of energy storage
4 levels of high voltage regulation
Regulated soft start DC filament supply
Regulated tube bias supply
Toroidal power transformer
Power requirements: U.S.: 120 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
Input capacity: VTPH-1MM up to 300 mv at 1 kHz,
1 volt at 10 kHz (output unloaded)
VTPH-1MC PLUS up to 30 mv at 1 kHz,
100 mv at 10 kHz (output unloaded)
Overall dimensions: 19" wide x 3.5" high x 10" deep
Warranty: 5 years, parts and labor
90 days on tubes
Manufactured by
Herron Audio Division of Herron Engineering
St. Louis, Missouri
Herron Audio Vacuum Tube Phono Preamplifier
To Previous Page
Loading...
