We have an Audioquest PowerQuest 3 available. The unit is in like-new condition, still has the factory protective plastic covering. This unit does offer a substantial amount of AC noise dissipation, as well as surge protection.
Details from the manufacturer:
EXTREME VOLTAGE SHUTDOWN 140VAC: Will activate the main power circuit relay to open within less than 0.25 seconds; automatically resets once the incoming power is within a safe range.
NON-SACRIFICIAL SURGE PROTECTION Nothing to damage with repeated 6000V/3000A input surge tests, which is the maximum that can survive a building’s AC electrical panel.
ULTRA-LINEAR FILTERS Differential-Mode Noise Dissipation: In excess of 22dB reduction from 30kHz-1GHz; Common-Mode Noise Dissipation: In excess of 22dB reduction from 30kHz-100MHz. Both filters linearized for dynamic (rising) line impedance with frequency from 0.05 Ohms (source) and 10 to 50 Ohm load, (system current dependent). 4K/8K
VIDEO OPTIMIZED OUTLETS In addition to the Ultra-Linear Filters, these outlets offer additional Noise-Dissipation technology to maximize TV performance.
INPUT CURRENT MAXIMUM CAPACITY: 15 AMPS RMS
SIGNAL LINE PROTECTION: PHONE – NETWORK – CABLE/SATELLITE
USB CHARGE CAPACITY: 4X PORTS – TOTAL CAPACITY 4.8 AMPS DIRECTIONALLY OPTIMIZED CONCENTRIC-GEOMETRY AUDIOQUEST POWER CORD CONNECTED EQUIPMENT PROTECTION WARRANTY
OUTLETS 1, 5
4K/8K Video Optimized Ultra-Linear Filter: Best when connected to video screens, televisions, projectors, or universal players.
OUTLETS 2, 3, 6, 7
Ultra-Linear Filter: Best when connected to audio/video source components, computers, modem, or router.
OUTLETS 4, 8
High-Current: Best when connected to soundbar, power amplifier, audio/video receiver, or subwoofer.