Cayin N7

The Cayin N7 represents a significant breakthrough in the world of high-end audiophile portable players. As the world’s first portable player to feature a fully passive 1-bit DAC made up of 128 resistors, it redefines the standards of digital-to-analog conversion in a portable format. This audiophile player combines a fully balanced audio architecture, switchable discrete component amplification between Class A and AB, and an optimized Android 12 system. This unique combination allows the N7 to faithfully reproduce high-resolution audio files up to 32-bit/768 kHz, DSD512, and MQA, while offering unparalleled flexibility of use.

A Revolutionary Audio Architecture

At the heart of the Cayin N7 lies a major innovation: its fully passive 1-bit DAC composed of 128 resistors (4 × 32). This approach, usually reserved for ultra high-end SACD players, makes its debut in a portable player. Unlike conventional DAC chips (AKM, ESS, Rohm), this passive symmetrical system ensures a conversion that is more faithful to the original digital signals.

This unique design enables optimal processing of native DSD formats up to DSD512. For PCM and MQA files, the player intelligently converts them to DSD to fully leverage its conversion architecture. Two precise oscillators (49.152 MHz and 45.158 MHz) ensure perfect data timing, eliminating digital jitter issues that can negatively impact sound quality.

The amplification stage continues this philosophy of excellence with a fully balanced 4-channel circuit using only discrete components. Ultra-low-noise JFET (Junction Field Effect Transistor) transistors are paired with a BJT low-pass filter to maximize gain while suppressing negative current. This meticulous design optimizes the signal-to-noise ratio and reduces interference to an absolute minimum.

Dual Sound Personality: Class A or AB

A remarkable feature of the Cayin N7 is its ability to operate in two distinct amplification modes: Class A or Class AB. This rare flexibility allows you to tailor the sound signature to your listening preferences or battery life requirements.

In Class A, the player prioritizes optimal sound quality with richer and more musical reproduction, at the cost of higher power consumption. Class AB amplification offers an excellent compromise between sound performance and energy efficiency. This adaptability is especially valuable during long trips where battery life becomes a crucial factor.

Volume control is also handled in an analog manner via a resistor network. This traditional approach ensures precise regulation without degrading signal quality, unlike digital attenuators that can reduce the effective resolution of audio files.

Universal Connectivity and Versatile Use

The Cayin N7 goes beyond the simple function of a player thanks to its comprehensive connectivity. Its two headphone outputs—a balanced 4.4 mm (500 mW at 32 ohms) and an unbalanced 3.5 mm (250 mW at 32 ohms)—are compatible with virtually all headphones and earphones on the market. The output impedances of 1.2 Ω and 0.6 Ω respectively ensure optimal compatibility with low-impedance earphones.

The player also features two additional outputs (4.4 mm and 3.5 mm) configurable as line out or preamplifier. This versatility transforms the N7 into an audiophile source for any home hi-fi system. In preamplifier mode, it delivers up to 7 Vrms balanced and 4 Vrms unbalanced, with exemplary channel separation (105 dB and 98 dB respectively).

Digital connectivity is also well covered with a multifunction USB-C port serving as a USB DAC (up to 32-bit/768 kHz and DSD512), digital audio output, and charging port. An I²S output via mini-HDMI completes the arsenal for advanced audiophile setups.

Android Experience Optimized for Audio

The Cayin N7 runs on Android 12, specifically adapted to preserve audio signal integrity. This optimization allows direct transmission of digital streams to the DAC without the usual modifications imposed by standard operating systems.

Equipped with a 5-inch high-definition touchscreen (1080 × 1920 pixels), the player offers an intuitive interface for browsing your music library or accessing streaming services. The pre-installed Google Play Store allows you to use major apps like Qobuz, Tidal, Spotify, or Deezer. The system is powered by a Snapdragon 665 processor with 4 GB of RAM and 64 GB of internal storage, expandable via microSD card up to 1 TB.

Dual-band WiFi connectivity (2.4 GHz/5 GHz) ensures smooth access to online services and allows synchronization with music libraries stored on your home network. The bidirectional Bluetooth 5.0 controller supports high-definition codecs LDAC (up to 96 kHz) and UAT (Ultra Audio Transmission, up to 192 kHz), providing audiophile-quality wireless transmission.

Battery Life, Design, and Physical Experience

The Cayin N7 is equipped with a large 9000 mAh (3.8V) battery offering variable battery life depending on usage configuration: up to 10 hours in unbalanced Class AB, 8.5 hours in balanced Class AB, 8.5 hours in unbalanced Class A, and 6.5 hours in balanced Class A. Full charging takes about 5.5 hours with a standard charger (5V-2A) or 3.5 hours with a PD2.0 fast charger (9V-2A).

Physically, the CNC-machined aluminum chassis with a sandblasted finish gives the N7 a sophisticated and robust look. The dimensions of 142 × 77.8 × 22.2 mm and the weight of 380 grams reflect the technological density of the device. Physical controls include a volume potentiometer, a power button, and direct playback buttons for intuitive use even without looking at the screen.

Technical Specifications

Audio Processing

• Ultra-precise 1-bit DAC (4 x 32 resistors)
• Discrete Class A or AB amplifier
• Passively adjusted volume (no loss of quality)
• Supported audio formats: 32-bit / 768 kHz, DSD512, MQA

Interface and Storage

• Large 5” color LCD screen (1080 x 1920 px)
• Storage: 64 GB (expandable via microSD)
• System: Android 12 with Play Store access

Audio Outputs

Headphones

• 4.4 mm balanced Pentaconn
  • 500 mW at 32 ohms, response 20 Hz – 20 kHz
  • THD+N: 0.004%, SNR: 116 dB, separation: 110 dB
• 3.5 mm unbalanced mini-jack
  • 250 mW at 32 ohms, response 20 Hz – 20 kHz
  • THD+N: 0.004%, SNR: 115 dB, separation: 78 dB

Preamp Output

• 4.4 mm: 7 Vrms – SNR: 117 dB, separation: 105 dB
• 3.5 mm: 4 Vrms – SNR: 116 dB, separation: 98 dB

Line Output

• 4.4 mm: 4 Vrms – SNR: 117 dB, separation: 105 dB
• 3.5 mm: 2 Vrms – SNR: 116 dB, separation: 98 dB

Wireless Connectivity

• Bluetooth transmitter / receiver
• Codecs: SBC, AAC, UAT, LDAC

Battery and Battery Life

• Capacity: 9000 mAh (3.8 V)
• Battery life: 10 h (unbalanced) / 8h30 (balanced)

Connections

• 1x 4.4 mm balanced headphone jack
• 1x 3.5 mm unbalanced headphone jack
• 1x 4.4 mm line / preamp output
• 1x 3.5 mm line / preamp output
• 1x USB-C port (charging + USB DAC)
• 1x HDMI I2S output

Included Accessories

• Protective case
• Tempered glass screen protector
• 4.4 → 2.5 mm & 3.5 → 2.5 mm adapters
• USB-C cable
• Quick start guide

Dimensions and Weight

• Size: 77.8 x 142 x 22.2 mm
• Weight: 380 g