Go to Top

PH-302 MkII Phono Preamplifier

Moving coil and moving magnet phono preamplifier with 5AR4 vacuum tube voltage regulation. Shielded R-Core power transformer, separate step up transformers for MC cartridges, separate inputs for MC or MM cartridges, MM optimized for 47 k ohm load, MC externally adjustable from 10Ω to 47kΩ loads.  Fully regulated power supply section, dual triode vacuum tube buffer and gain stages. High gain design with 60 dB overall gain in the MC section.  Black or silver anodized aluminum faceplate, black aluminum chassis standard. ZERO feedback design.

The following section describes the PH-302 basic specifications. The specifications are subject to change without notice or obligation.

Circuit Type Direct Coupled
Single-ended Class A
Gain MM – 38 dB using triode vacuum tubes
MC – 60 dB, using input transformers and triode vacuum tubes
Noise and Hum -78 dB below full output
Input Impedance MM – 47kΩ
MC – Selectable 10Ω, 43Ω, 100Ω, 330Ω, 470Ω
Output Impedance 660 Ohms
Frequency Response RIAA Curve + 0.5 dB, passive RIAA circuit design
Power Supply Design/ Power Transformer Fully Regulated Power Supply with 1 ea. – R-Core transformer,  200% Duty rating for long life and reserve energy
Vacuum Tube Complement 2 ea – 6SL7 Head Amp
2 ea – 6SL7 RIAA EQ & Amp Gain Stage and buffer
1 ea – 5AR4 Vacuum Tube Rectifier
Resistors 1% Metal Film
Power Supply Capacitors 6 ea – 47 µFd @ 350 VDC capacitors
AC Cord 3 Conductor, Detachable
AC Power Requirements 100, 117 or 234 Volts @ 50/60 Hz, set by market
Consumption 35 watts
Warm-Up Time 5 Minutes
Break-In Time 100 hours of playing time
Finish Black or Silver anodized aluminum face plate, semi gloss black aluminum chassis
Weight 22 lbs.
Dimensions 4″ H x 17″ W x 13″ D