Cayin iDAC-8

The Cayin iDAC-8 stands out as an exceptional digital-to-analog converter (DAC), designed for the most demanding audiophiles. Its main strength lies in its unique ability to switch between tube or transistor output, allowing you to tailor the sound signature to your listening preferences. Equipped with the latest generation AKM converters capable of decoding formats up to 32 bits/768 kHz and DSD512, this DAC combines superior technical performance with remarkable user flexibility. Its dual function as a DAC and preamplifier, coupled with comprehensive connectivity, makes it a versatile centerpiece for any high-fidelity audio system.

A Unique Dual-Personality Audio Design

The Cayin iDAC-8 stands out thanks to its hybrid architecture, offering two distinct sound signatures. Users can choose between a transistor output stage for precise, analytical reproduction, or a tube stage for a warmer, more enveloping sound. This duality is at the heart of the device’s design philosophy.

The tube stage employs four 6H6b-B electronic tubes in a symmetrical configuration. For unbalanced outputs, two tubes are used (one per channel), with two parallel triodes forming the first stage, operating as cathode followers to improve current capacity and reduce noise. For balanced outputs, the two triodes of each tube are dedicated to amplifying the positive and negative phases of the same channel.

The transistor stage, on the other hand, uses high-performance Texas Instruments audio operational amplifiers, specially selected for their low noise and high fidelity. This design ensures precise and transparent sound reproduction, with minimal distortion and maximum dynamics.

First-Class Digital-to-Analog Conversion

At the heart of the Cayin iDAC-8 is the combination of the AK4191 controller with two AK4499EX converters from AKM, considered benchmarks in the field. Each channel benefits from its own dedicated DAC, thus optimizing stereo separation and significantly improving the signal-to-noise ratio.

This architecture allows the iDAC-8 to decode virtually all existing digital audio formats: PCM up to 32 bits/768 kHz and DSD up to DSD512. Thanks to this uncompromising design, the converter reproduces every detail of high-resolution recordings, revealing sonic nuances imperceptible with less sophisticated equipment.

The technical performance lives up to expectations for a device of this caliber: a dynamic range exceeding 126 dB on balanced output, an infinitesimal distortion rate of 0.0006% in transistor mode, and an extended frequency response. These features ensure absolute transparency in audio signal reproduction.

Exceptional Versatility and Connectivity

The Cayin iDAC-8 shines with its versatility. It can operate either as a simple converter with fixed output level or as a preamplifier with variable volume. This dual function allows it to be integrated into various audio system configurations, whether with a traditional integrated amplifier or directly connected to a power amplifier.

Its particularly comprehensive connectivity is another major asset. For inputs, it offers:

• A USB-B port for computer connection
• An optical Toslink input
• An AES/EBU input
• Two coaxial inputs (including one BNC)
• An HDMI i2S input

On the output side, the iDAC-8 offers balanced XLR and unbalanced RCA connections. Each output can be configured to fixed level (Line Out) or variable (Pre Out), thus multiplying integration possibilities in different audio systems.

Volume control, essential in preamplifier mode, is handled by an NJW1195AV system using a 4-channel resistor ladder circuit. Although managed electronically, volume adjustment is carried out entirely in the analog domain to preserve signal integrity.

Perfect Integration into the Cayin Ecosystem

The iDAC-8 is part of a coherent range of Cayin products, which also includes the iDAP-8 digital streamer and the iHA-8 headphone amplifier. These three devices share the same design language and can operate independently or be combined to form a complete, perfectly integrated audio system.

This system compatibility is particularly appealing for those looking to gradually build a high-quality audio chain. Pairing the iDAC-8 with the iDAP-8 streamer, for example, allows access to all streaming platforms and audio files stored on the network with optimal sound quality.

Audiophile-Grade Power Supply

The quality of the power supply is crucial for the performance of a high-end DAC. The Cayin iDAC-8 features a toroidal transformer designed and manufactured in-house, with a power rating of 45 watts. This oversizing ensures a stable and clean current to all electronic components.

High-quality filtering capacitors complete the power supply system, effectively eliminating electrical interference that could affect the purity of the audio signal. This special attention to the power supply results in an extremely low noise floor and better definition of sonic micro-details.

Technical Specifications

General Features

• High-fidelity digital-to-analog converter (DAC) and preamplifier
• Steel/aluminum chassis
• Dual AK4499EX DAC with AK4191EQ controller
• Compatible with PCM up to 32 bits / 768 kHz and DSD512
• Line output via transistors or tubes (4 x 6H6B-B), selectable by the user
• LCD display for control

Audio Performance

RCA Line Output

• Output level: 2.2 Vrms (transistors and tubes)
• Frequency response: 20 Hz – 50 kHz
• THD+N: 0.0007% (transistors) / 0.05% (tubes)
• Dynamic range: > 120 dB (transistors) / 111 dB (tubes)
• SNR: 117 dB (transistors) / 111 dB (tubes)

XLR Line Output

• Output level: 4.2 Vrms (transistors) / 4.1 Vrms (tubes)
• THD+N: 0.0006% (transistors) / 0.8% (tubes)
• Dynamic range & SNR: > 126 dB (transistors & tubes)

RCA Pre-out

• Output level: 6 Vrms
• THD+N: 0.003% (transistors) / 0.2% (tubes)
• Dynamic range: > 123 dB (transistors) / 120 dB (tubes)
• SNR: 122 dB (transistors) / 119 dB (tubes)

XLR Pre-out

• Output level: 12 Vrms (transistors) / 10 Vrms (tubes)
• THD+N: 0.005% (transistors) / 0.8% (tubes)
• Dynamic range: > 124 dB (transistors) / 123 dB (tubes)
• SNR: 123 dB (transistors) / 122 dB (tubes)

Connectivity

• 1x USB-B
• 1x Toslink Optical
• 1x AES/EBU
• 2x Coaxial (including 1 BNC)
• 1x HDMI i2S
• 1x RCA output (fixed or variable)
• 1x Balanced XLR output (fixed or variable)

Physical Specifications

• Dimensions: 270 x 70 x 215 mm
• Weight: 4.6 kg