SMSL PH-1 High Fidelity MM Phono Amplifier Support 90mWx2 6.35mm Headphone Jack Portable 46dB Gain Power Amplifier
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Specifications
- Brand Name
- S.M.S.L
- Output Type
- Balanced Out
- Built-in Battery
- No
- Recommended Headphone Maximum Impedance
- < 32 Ohm
- Input Type
- RCA
- High-concerned chemical
- None
- Body Material
- Metal
- Model Number
- SMSL PH-1
- Package
- Y
- Certification
- CE
- Origin
- Mainland China
- Headphone Output Power
- 90mWx2(32Ω)
- Frequency Response
- 20Hz-20kHz
- THD+N(unweighted)
- 0.008%(-81dB)
- Channel Separation
- -77dB(1kHz)
- Gain
- 46dB
- SNR
- 84dB
- Power Consumption
- 1W
- Power Input
- DC 5V 500mA
Product Description
SMSL PH-1 High-Fidelity MM Phono Amplifier
Product Overview
The SMSL PH-1 is a dedicated, ultra-compact MM (Moving Magnet) phono preamplifier designed to deliver accurate and quiet amplification for vinyl playback. It focuses solely on MM cartridge performance, integrating essential features into a palm-sized chassis for both novice and experienced users.
Core Performance & Design Philosophy
Dedicated MM Circuitry: Designed exclusively for MM cartridges, eliminating compromises from MC circuits. This focused approach claims to improve circuit performance significantly.
Optimized High Gain: Features a fixed 46dB gain, higher than many entry-level models (typically 38-40dB), providing a fuller, more dynamic, and energetic signal output suitable for modern amplifiers.
Ultra-Low Distortion: Achieves a measured THD+N of 0.008% (-81 dB), ensuring high-fidelity signal amplification.
Key Features & Build Quality
Compact & Robust Enclosure: Precision CNC-machined aluminum body (96 x 94 x 30 mm) ensures mechanical strength, stability, and enhanced EMI resistance.
Integrated Headphone Amplifier: Includes a front-panel 6.35mm headphone jack with independent volume control, adding versatility for private listening or use as a preamp.
Advanced Isolated Power Supply: Built-in isolated dual power supply processing minimizes hum and interference, supporting an external DC power supply for potential performance upgrades.
Full-Featured Connectivity: Equipped with gold-plated RCA input/output jacks, a ground terminal, and a DC power input, all arranged for easy wiring despite the small size.
Plug-and-Play Operation: Gain and capacitive reactance (150pF) are pre-set for simplicity, requiring no user adjustments beyond headphone volume.
Measured Technical Specifications
THD+N (Unweighted): 0.008% (-81 dB)
Signal-to-Noise Ratio (SNR): 84 dB
Channel Separation: -77 dB @ 1kHz
Dynamic Range: 85 dB
Frequency Response: 20Hz - 20kHz
Headphone Output Power: 20mW x 2 @ 32Ω
Power Consumption: 2W
Weight: 0.205 kg
Pros & Cons
Pros
- Dedicated MM phono preamplifier for optimized vinyl record playback
- Low distortion and noise for clear, accurate audio quality
- Compact, portable design for easy desktop or shelf setup
- CE certified for global safety and quality compliance
Cons
- Only supports MM (Moving Magnet) turntable cartridges, not compatible with MC (Moving Coil) cartridges
- No built-in speakers, requiring connection to external speakers or headphones
- No physical volume control on the unit itself, requiring adjustment via connected devices
- Power adapter is not included in the retail package
Common Questions
What type of audio equipment is the SMSL PH-1 phono amplifier intended for?
This is a dedicated MM (Moving Magnet) phono preamplifier designed to amplify vinyl turntable audio signals for connected speakers or headphones.
What connectivity ports does this phono amplifier include?
It features RCA input jacks for turntable connection, plus a 6.35mm headphone output jack for private listening.
What is the audio performance specification for this amplifier?
It has a low THD+N rating of 0.008% (-81dB), 46dB gain, and 90mWx2 headphone output power for 32Ω headphones.
What power source does this phono amplifier use, and how much energy does it consume?
It runs on DC 5V 500mA power input, with a very low power consumption of just 1W during active use.
What safety certifications does this SMSL PH-1 amplifier have, and where is it made?
It holds CE certification for safety and quality, and it is manufactured in Mainland China.
Product information last updated on January 15, 2026