Cen.Grand 9i-906 "Silver Fox" – Reference-Class Headphone Amplifier with Extreme Driving Power
The Cen.Grand 9i-906 "Silver Fox" is a high-end, reference-grade headphone amplifier designed specifically for power-hungry, difficult-to-drive headphones, especially planar magnetic models. Built on a high-performance power amplifier architecture, it has been expertly tuned by Cen.Grand engineers for headphone use without compromise.
High-Current Drive & Robust Power Supply
The 9i-906 features a high-stability, high-current power supply, essential for accurate and distortion-free headphone amplification. Its output stage consists of four pairs of high-power British FET transistors, ensuring fast transient response and exceptional current-handling capabilities.
Output Power
- 20W @ 30Ω (BTL mode, 0.02% THD)
This exceptional output power allows for full control and dynamic performance in even the most demanding planar magnetic headphones, such as HIFIMAN Susvara and Audeze LCD-5.
Output Modes – Four Configurations for Sonic Fine-Tuning
The Silver Fox offers four distinct output modes, enabling users to fine-tune sound characteristics based on headphone type and personal preference.
- BTL (Balanced Transformer-Like Mode)
- True balanced drive, enhancing dynamics and power
- Ideal for high-impedance or hard-to-drive headphones
- Active Ground Mode
- Smoother, warmer sound, excellent for vocals and acoustic recordings
- Parallel Mode
- Maximized current delivery, perfect for medium-impedance headphones
- Normal Mode
- Optimized for low-impedance or high-sensitivity headphones
- Available in both balanced and single-ended configurations
Impedance Modes – Optimized Compatibility
The amplifier provides four selectable impedance modes:
- 1 high impedance mode (for general use)
- 3 low impedance modes (Low 1, Low 2, Low 3)
These settings are particularly useful for sensitive IEMs and low-noise headphones, allowing users to reduce background noise while maintaining driving power.
Connectivity – Maximum Flexibility
Headphone Outputs
- XLR 4-pin (balanced)
- 6.35mm jack (single-ended)
- 4.4mm (balanced)
- 2 × XLR 3-pin (balanced, left/right separate)
Inputs
- 2 × XLR (balanced)
- 2 × RCA (single-ended)
Note: The RCA inputs are internally balanced, offering the same performance as the XLR inputs. However, XLR input is recommended for optimal sound quality.
Controls – Intuitive & Functional Interface
The Silver Fox keeps the user interface clean and functional, focusing on essential controls:
- Input Selector (XLR / RCA)
- Output Mode Selector (Normal / BTL / Parallel / Active Ground)
- Impedance Mode Selector (adjustable via long press)
- Analog Volume Control
- Power Button
Technical Specifications
Parameter | Specification |
Output Power | 20W @ 30Ω (BTL mode, 0.02% THD) |
Frequency Response | 20Hz – 20kHz (±0.2dB) |
Power Supply | AC 220–230V, 50/60Hz |
Dimensions | 430 × 100 × 360 mm |
Net Weight | 12 kg |
Gross Weight | 13.7 kg |
The Cen.Grand 9i-906 "Silver Fox" is not just a powerful headphone amplifier—it is a reference-class component setting new standards in high-end headphone amplification.
With versatility, precision, and robust performance, it offers a no-compromise listening experience in any scenario. Whether driving sensitive IEMs or extreme-demand planar magnetic flagships, the Silver Fox guarantees absolute control, delivering true audiophile excellence.
