PH9 vs PH7
The PH7's signal-to-noise is 76 dB against the PH9's 77 dB, its mm gain 57.5 dB against 58 dB, and its thd 0.005% against 0.015%. Both share output voltage (0.5V RMS).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPhono Pre-AmpsTube AmplifiersDiscontinued
Estimated price (community-sourced)
$4,800
Around — community and catalog average, updates slowly
About the PH9
The Audio Research PH9 phono stage features a trio of 6H30 vacuum tubes in a simple signal path for transparent, vibrant sound. It offers five selectable input impedances (47k, 1000, 500, 200, 100 Ohms) adjustable via remote or front panel menu, supporting a wide range of MM and MC cartridges. Additional features include tube hour tracking, auto shutdown, and electronically regulated power supplies with vacuum tube regulation. Hand-assembled with a focus on high-definition audio principles since 1970, it delivers natural openness, extended frequency response, low noise, and dynamic bass.
Specifications
Power Specifications
Amplification power output and characteristics
- Input Impedance
- 47Ω
- Max Input Voltage
- 0.1V RMS
Analog Output
Analog signal output specifications
- THD
- 0.015%
- SNR
- 77 dB
- Output Voltage
- 0.5V RMS
- Output Impedance
- 200Ω
- Max Output Voltage
- 0.5V RMS
Phono Preamplifier
Phono stage specifications
- MM Gain
- 58 dB
- Adjustable Loading
- Yes
- Loading Options
- 47Ω, 1000Ω, 500Ω, 200Ω, 100Ω
- Adjustable Capacitance
- No
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA
- Analog Outputs
- RCA
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 480 mm (W × H × D)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions