PH 9.0 vs Zesto Audio Andros PS-1
The Andros PS-1's mc gain is 65 dB against the PH 9.0's 64 dB, its mm gain 45 dB against 52 dB, its height 127 mm against 102 mm, and its depth 305 mm against 254 mm.
AI-generated product photo — not official manufacturer imagery.
AmplifiersPhono Pre-AmpsTube Amplifiers
About the PH 9.0
The ModWright Instruments PH 9.0 is a two-chassis, zero-negative-feedback tube phono preamplifier for moving-magnet (MM) and moving-coil (MC) cartridges. It uses separate MM and MC RCA inputs, selectable MC resistive loading, adjustable gain, and an external solid-state power supply. The standard version provides single-ended RCA outputs; fully balanced, transformer-coupled XLR outputs were available as an optional upgrade. Its tube complement is two 6C45 power/signal tubes and two 6922/6DJ8/7308-compatible tubes. The PH 9.0 later formed the basis for the upgraded PH 9.0X and PH 9.0XT models, but it remains identified by the manufacturer as a distinct model and an upgrade path is documented.
Specifications
Phono Preamplifier
Phono stage specifications
- MM Gain
- 52 dB
- MC Gain
- 64 dB
- Adjustable Loading
- Yes
- Loading Options
- 10Ω, 20Ω, 50Ω, 100Ω, 250Ω, 470Ω
- Adjustable Capacitance
- No
Connectivity
Input and output connections
- Analog Inputs
- MM, MC
- Analog Outputs
- XLR
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 254 × 102 × 254 mm (W × H × D)
Never published
- Power Specifications — the maker never published this. Checked 15 sources on 8 Sept 2026
- Analog Output — the maker never published this. Checked 15 sources on 8 Sept 2026
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions