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Usher Audio P-307A Preamplifier

Usher Audio P-307A Preamplifier

The P-307 is the control center of today’s high end sound systems. Its two main functions are source selection and volume control. Every effort has been made to keep P-307 as accurate as possible.


To avoid unwanted interactions with adjacent source components, P-307 uses high-quality relays and switching designs to ensure that every source is intact. Thus all sources remain separate from one another and from the power amplifier and cables.

In the digital age, analog preamplifiers remain the most reliable and neutral-sounding component of controlling volume. P-307 uses a superior attenuator
that offers a neutral sonic performance.


Since AC power supply generates noise, P-307’s power supply is housed in a separate chassis. Thus P-307’s audio circuits are exposed only to quiet, regulated DC power and the audio signals itself.


USHER P-307 is a modern, reference-level preamplifier. After all, it is only when P-307 reveals the palpable imaging focus and soundstage, the sense of ease and rhythmic flow, as well as the delicate subtlety of musical details that make listening to music a real enjoyment.


For music lovers, USHER P-307 Stereo Preamplifier is the rare and
affordable high end in town.



Technical Specifications:

Power Consumption:   7W maximum
Main Voltage:   100V,120V, 200V, 230V or 240V AC@50/60Hz
Inputs:   7 stereo single-ended(RCA); 1 stereo single-ended(RCA)phono
Outputs:   2 stereo single-ended(RCA)
Gain:   14.3 dB
S/N:   105 dB
Input Overload:   2.34V rms
Input Impedance:   47k Ohm
Output Impedance:   120 Ohm
Maximum Output (MAIN outputs):   15.3V rms
Frequency Response:   10Hz~100kHz

Dimensions (w x d x h):   17" x 11.4" x 3.2"  

Weight: 9 lbs (4 kg)

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