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Products

Converters

• GP-RCA to XLR Audiophile Converter$379.00
• GP-XLR to RCA Audiophile Converter$379.00

Filters & signal processors

• GP-AMBDEC Audiophile Ambience Decoder$679.00
• GP-HP1002 High-Pass Rumble and Tone-Arm Notch Filter$679.00
• GP-LPSUB Subwoofer Signal Generator$679.00

Phono preamplifiers

• GP-1000 Audiophile Phono Preamplifier$1,149.00
• GP-1001 Audiophile Phono Preamplifier, RCA$939.00

Preamplifiers

• GP-2000 Full Feature Audiophile Preamplifier$3,349.00

Source controllers

• GP-3000 Audiophile Source Controller and Sub-Sonic Signal Generator$1,649.00

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System guides

• All resourcesThe hub
• Analog Preamplifiers & Source Control
• Analog Rear Ambience
• Analog Subwoofer Integration
• Phono Preamplifiers
• RCA & XLR Audio Converters
• Turntable Rumble Filtering

Journal

• Where does a phono stage fit?September 2026
• RCA and XLR, explained.September 2026
• Understanding cartridge loading.September 2026
• Adding a subwoofer to your system.August 2026
• Tracing the source of hum.August 2026

Read the Journal

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