Aesthetix Io Standard Tube Phono Stage with Single (Stereo) Power Supply

Up for sale is the legendary Aesthetix Io Standard all-tube phono preamplifier, configured with a single external Io Series stereo power supply. Widely regarded as one of the finest and most dynamic phono stages ever created, the Io offers unmatched transparency, holographic imaging, and deep, authoritative bass response. This is the pure line phono version featuring a clean, sleek front panel without the optional volume controls, making it the ultimate choice for integration into a system with an existing high-end preamplifier.

This specific unit has been freshly serviced with high-grade upgrades. The output stage tubes on each channel have been replaced and carefully screened with a premium, matched pair of low-noise and low-microphonics Tung-Sol 6SN7GTB tubes. This upgrade significantly lowers the noise floor and enhances the resolution, allowing the unit's natural dynamics to truly shine.

This listing includes the main audio chassis, one external stereo power supply, dual umbilical cables, and comes complete with the original factory packaging, boxes, and a printed copy of the owner's manual. The power supply is the size of a standard power amplifier and weighs approximately 50 pounds. In this single power supply configuration, the dedicated power unit utilizes a massive 210 volt-amp heater transformer and a 170 volt-amp primary high-voltage transformer to clean and feed both audio channels through dual umbilical connectors on the rear.

Key Features & Technical Specs:

• All-Tube Circuitry: High-gain, zero feedback pure vacuum tube design capable of handling ultra-low output moving coil (MC) cartridges directly.
• Gain: Maximum 80dB, internally selectable down to 50dB via internal jumpers.
• Frequency Response: 20Hz – 20kHz.
• Signal-to-Noise Ratio (SNR): 70 dB minimum.
• Input Impedance: User-selectable on the rear panel from 47 kΩ down to 10 Ω.
• Pure Line Stage (No Volume Controls): Clean front panel configuration optimized for running directly into your system's preamplifier.
• Upgraded Output Tubes: Fresh, matched pairs of low-noise & low-microphonics Tung-Sol 6SN7GTB tubes installed in the output stage of both channels.
• Massive Power Supply: Features high-current vacuum tube regulation utilizing EL34/6CA7 and 12AX7 tubes to deliver incredibly quiet, stable power.
• Dual Umbilical Feeds: The single power supply runs dedicated dual cables to isolate power delivery to the left and right audio channels.
• Build Quality: Renowned Io Series architecture with overbuilt transformers and premium point-to-point component execution.

Condition:

• Cosmetic Rating: 8/10 (Very Good / Excellent)
• Cosmetics: In wonderful condition and very well cared for. Shows only light, normal signs of use and minor surface wear consistent with age and careful handling in a dedicated audio rack. Faceplates present beautifully.
• Functionality: Fully tested, serviced, and operational. All tubes checked; the brand new Tung-Sol output stage tubes are perfectly matched and balanced.

Includes:

• Aesthetix Io Phono Stage Audio Chassis (Standard Edition, No Volume Controls)
• Aesthetix Io Series Stereo Power Supply
• Dual power umbilical cables
• Standard AC power cord
• Printed Copy of the Aesthetix Io Owner's Manual
• Original Aesthetix Factory Boxes & Packing Material

Pricing & Value:

Offered at a very fair price considering the solid 8/10 condition and the freshly screened, low-noise Tung-Sol output tube upgrade. Comes complete with all factory packaging. Serious offers will be considered, but lowball offers will be politely declined.

Shipping & Packing:

Because this unit includes its original factory boxes, it will be safely nested in its proper, custom-fitted inner foam inserts for transit. Due to the extreme weight of these units (the power supply alone is ~50 lbs), they will be wrapped securely, double-boxed if necessary, and shipped fully insured with signature tracking required. Local pickup is also welcome in the Gilbert, AZ area.

Feel free to reach out with any questions or cartridge matching inquiries!