Fernandez
Very good clear improvement
Comment from 28 September 2026 — Experience from 17 September 2026
Automatically translated — Show original (French)
Très bien nette amélioration
Audioquest PowerQuest 505
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PowerQuest 505 Power Conditioner
When it comes to optimizing the audio experience in your stereo systems, multi-channel home theaters, or custom installations, choosing the right power conditioner is essential. The PowerQuest 505 Power Conditioner is a cutting-edge solution that creates a solid foundation for exceptional audio performance.
Peak Performance
The PowerQuest 505 Power Conditioner adopts AudioQuest’s comprehensive approach to AC power conditioning. Its design is based on the concept of linear noise treatment, enabling first-order, wide-bandwidth noise reduction. This feature is crucial for ensuring optimal audio performance.
Reliable Protection
Protection is a top priority for the PowerQuest 505 Power Conditioner. Equipped with non-sacrificial surge protection and automatic shutdown in case of extreme voltages exceeding 140 VAC, it offers enhanced safety for your audio equipment. You can set it and forget it with peace of mind.
Tailored Power Supply
With a total of 7 AC outlets, the PowerQuest 505 Power Conditioner provides a power supply tailored to your needs. 3 high-current outlets are designed for amplification devices, while 4 linear-filtered outlets are dedicated to source devices. This distribution ensures an efficient and stable power supply, contributing to optimized audio performance.
Noise Reduction: An Absolute Priority
In the realm of audio, noise reduction is crucial for an optimal experience. The PowerQuest 505 Power Conditioner offers linear noise dissipation of more than -22 dB. It operates in differential mode from 30 kHz to 1 GHz and in common mode from 30 kHz to 100 MHz, ensuring remarkable audio performance.
PQ-715 Power Cord
The PowerQuest 505 Power Conditioner comes with the PQ-715 power cord, designed to deliver optimal performance. It features semi-solid concentric long-grain copper (LGC), ZERO-Tech technology, and RF/ND-Tech technology. With a NEMA male plug and IEC C-13 female connectors, this 2-meter power cord meets the demands of the most discerning audio installations.
Advanced Surge Protection
The PowerQuest 505 Power Conditioner offers advanced surge protection. Withstanding repeated 6000V/3000A input surge tests, it provides reliable protection for your valuable audio equipment. Additionally, it performs an extreme voltage shutdown at 140VAC to ensure the safety of your systems.
Technical Specifications
Noise Reduction
- Linear noise attenuation greater than -22 dB
- Differential mode: 30 kHz - 1 GHz
- Common mode: 30 kHz - 100 MHz
PQ-715 Power Cord
- Technology: semi-solid concentric long-grain copper (LGC), ZERO, radio frequency / non-directional (RF/ND)
- Connectors:
- Male NEMA plug
- Female IEC C-13 connectors
- Length: 2 m
Surge Protection
- Non-destructive protection
- Test resistance: input surge of 6,000 V / 3,000 A (repeated tests)
- Safety cutoff: 140 V AC
Connectivity
- 4 linear filtered outlets (source components / constant current)
- 3 high-current outlets (variable current components)
General Characteristics
- Maximum effective current: 15 A at 120 V
- Dimensions (W × H × D): 43.2 × 7.6 × 33 cm
- Weight: 10.8 kg
User reviews
Review highlights
- Reviews are unanimously positive, and the vast majority of buyers say they are very satisfied with this power conditioner.
- Nine out of thirteen customers report a noticeable improvement in sound, sometimes unexpectedly.
- Several buyers describe a clearer, more detailed and cleaner sound, with greater dynamics and better instrument separation.
- Four customers praise the electrical protection against interference and power outages, which provides valuable protection for the system.
Based on reviews from customers who purchased this product, summarised by AI
Samuel
Great!!! Very happy with it
Comment from 13 September 2026 — Experience from 31 August 2026
Automatically translated — Show original (Dutch)
Geweldig !!! Heel blij mee
Philippe
Very good product, which proved effective yesterday because, following the fires in the south, I had several power outages, and the device provides 2 small bonus seconds after the outage; you can tell that the protection system is indeed present. As for the improvement in sound and picture quality, I have noticed a slight gain for now, but I have not yet changed the power cables for the home theater amplifier. However, the product can already be described as very good, and it does not heat up either. As for HCS, as usual....perfect in every respect, my banker is going to hate you 😃.
Comment from 20 July 2026 — Experience from 9 July 2026
Automatically translated — Show original (French)
Très bon produit qui a été efficace hier car suite aux incendies dans le sud, j’ai eu plusieurs coupures de courant et l’appareil fournit 2 petites secondes de bonus après la coupure, on comprend que le système de protection est bien présent. Pour ce qui est de l’amélioration du son et de l’image, j’ai un léger gain pour l’instant mais je n’ai pas encore changer les câbles d’alimentation de l’ampli HC, mais d’ores et déjà on peut qualifier le produit de très bon et en plus il ne chauffe pas. En ce qui concerne HCS, comme d’habitude….parfait sur tous les points, mon banquier va vous détester 😃.
- Eco-contribution included in the sale price.
- Manufacturer reference: PQ505EU
- GTIN / EAN: 92592021518
