ST-PH1

RDL ST-PH1 - Stereo Phono Preamplifier

The RDL ST-PH1 is a high-quality stereo phono preamplifier designed for professional audio installations. It supports standard 47 kΩ unbalanced phono cartridge inputs and provides accurate RIAA equalization. Each of the two identical signal paths includes adjustable left and right output levels.

The outputs can be configured as balanced or unbalanced, driving both high and low impedance lines. With RDL’s SupplyFlex® power input configuration, the ST-PH1 accepts floating 24 Vdc, bipolar ±12 V / ±15 V, or ground-referenced 24 Vdc power sources.

For optimal performance, the ST-PH1 is intended to be installed close to the turntable, allowing line-level signals to be sent to downstream equipment with minimal interference and signal loss.

Functionality:

• stereo or mono phono preamplifier
• 47 kΩ unbalanced phono cartridge inputs
• RIAA equalization - accurate signal reproduction
• balanced and unbalanced outputs - for high and low impedance lines
• adjustable left and right output levels
• SupplyFlex® power input - supports multiple power configurations

Features:

• dual identical signal paths - consistent performance
• low-noise, low-distortion amplification - high fidelity
• compact design - easy integration into AV systems
• durable enclosure - installation-ready
• ideal for placement near turntables - minimizes signal degradation
• compliant with professional audio standards

The RDL ST-PH1 is a reliable solution for AV systems requiring precise phono signal amplification with flexible output and power options.