KECES P9 Linear Power Supply – Dual-Output Design for Low-Noise Hi-Fi Performance
With the KECES P9, the Taiwanese specialist for audiophile power supplies expands its renowned Pier Series. The compact model inherits core technologies from the larger P28, P14 and P6 designs, featuring a dual-zone configuration with separate regulation and grounding. According to the manufacturer, this allows a particularly clean and consistent power supply for streamers, DACs and other sensitive Hi-Fi electronics.
- KECES introduces the P9 Low Noise Linear Power Supply – a dual-output, fully discrete design providing stable, interference-free power for Hi-Fi components such as DACs, streamers and music servers. Built with custom toroidal transformer and solid aluminium chassis.
For years, KECES Audio has been recognised as a specialist in high-quality linear power supplies and isolation components. The company’s Pier Series combines solid engineering with meticulous craftsmanship, offering solutions for audiophiles seeking uncompromised system stability. The new KECES P9 Low Noise Linear Power Supply extends this line with a compact dual-output model, designed to deliver clean, steady current to both digital and analogue components. In modern streaming environments, where every microvolt of noise can affect performance, the P9 aims to provide the electrical foundation for maximum sonic integrity.
Key Facts
- Model: KECES P9 Low Noise Linear Power Supply
- Series: KECES Pier Series
- Design: Linear PSU with two independent outputs (zones)
- Output Capacity: 5 A + 5 A
- Voltage Range: 5–24 V adjustable across two zones
- Regulation: Fully discrete architecture (identical to P28, P14, P6)
- Transformer: Custom-built encapsulated toroidal design
- Build: 2 oz copper PCB, gold-plated DC sockets, aluminium chassis
- Protection: Over-temperature and over-voltage protection
- Manufacture: Hand-assembled in Taiwan
- Price: approx. € 790,-
Technology and Circuit Design
The KECES P9 draws heavily from the company’s flagship P28 and P14 models, sharing their fully discrete voltage regulation circuitry. By avoiding integrated regulator ICs, KECES achieves lower impedance, reduced residual ripple, and enhanced current stability. A custom-wound toroidal transformer, produced in-house, is resin-sealed and mechanically decoupled to minimize vibration and stray fields.
The two output zones operate independently. Zone I provides selectable voltages of 5 V, 7 V, 9 V or 12 V with a maximum current of 5 A, while Zone II covers 12 V, 15 V, 19 V or 24 V up to 5 A. Each zone features isolated grounding and individual regulation, designed to prevent cross-interference between connected components.
Construction, Components and Safety
Housed in a solid, resonance-damped aluminium enclosure, the P9 combines functional engineering with refined craftsmanship. The internal PCB features 70 µm copper traces in the AC section to minimize transmission losses. Gold-plated DC sockets ensure a low contact resistance for optimal current delivery.
A built-in over-temperature protection (OTP) circuit maintains operational safety under prolonged load, while an additional ground terminal supports advanced grounding configurations within complex systems. According to KECES, all manufacturing processes – from transformer winding to final testing – take place entirely at the company’s Taiwanese facility.
Practical Application in Hi-Fi Systems
The P9 is designed for audiophiles seeking to improve system stability rather than to “tune” the sound. In multi-component setups, such as streaming systems, DACs, network switches, or Roon cores, its dual regulated outputs can power two devices simultaneously without mutual interference.
Voltage flexibility between 5 V and 24 V allows compatibility with a wide variety of equipment, replacing multiple wall-wart adapters with a single, clean power source. Even in analogue configurations—such as turntable and phono preamplifier combinations—the P9’s low-noise performance can serve as a foundation for consistent signal integrity.
Price and Availability
The KECES P9 Low Noise Linear Power Supply will be these days at an retail price of € 900,-. Distribution in Europe will be handled through authorised KECES dealers, with the first shipments already en route from Taiwan.
Conclusion
With the P9, KECES Audio refines its Pier Series concept, delivering a compact yet powerful linear supply for demanding Hi-Fi systems. The dual-zone architecture, discrete regulation and high-grade build quality are designed to ensure stable and noise-free operation across a broad range of applications. Positioned as a performance-oriented infrastructure component, the KECES P9 aims to provide the clean electrical foundation upon which high-end sound can truly unfold.
| Product | KECES P9 Low Noise Linear Power Supply |
|---|---|
| Price | € 900,- |
Technical Data
| Product | KECES P9 Low Noise Linear Power Supply |
|---|---|
| Series | KECES Pier Series |
| Output Zone I | 5 V / 7 V / 9 V / 12 V – max. 5 A |
| Output Zone II | 12 V / 15 V / 19 V / 24 V – max. 5 A |
| Peak Current | up to 7 A |
| Regulation Circuit | Fully discrete design (same as P28, P14, P6) |
| Transformer | Custom encapsulated toroidal type |
| Grounding | Independent per zone, additional ground terminal |
| Noise Level | < 1 mV RMS (typical, according to manufacturer) |
| Protection | Over-temperature (OTP), over-voltage (OVP) |
| Connectors | Gold-plated DC jacks |
| Chassis | Resonance-damped aluminium |
| Weight | approx. 6,5 kg |
| Dimensions (W × D × H) | approx. 300 × 220 × 100 mm |
| Manufacture | Taiwan |
| Brand | KECES Audio |
|---|---|
| Manufacturer | KECES Audio |
| Distribution | Robert Ross Audiophile Produkte GmbH |
| More about this manufacturer at HiFi BLOG |
