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High Fidelity Audio

CD-35 II

Ayon Audio · CD

CD-35 II

An absolute reference top-loading SACD player and pure analog pre-amplifier hub.

The CD-35 represents the ultimate crowning achievement within Ayon Audio's physical media catalog, developed over several years of rigorous architecture mapping to completely dissolve the boundary between digital files and analog master tapes. Hand-assembled in Austria, this single-chassis masterpiece consolidates a reference optical transport, a fully balanced multi-input digital processor, and a genuine line-stage pre-amplifier into one non-magnetic housing. By keeping structural volume attenuation entirely within the analog domain, it allows direct, uncompromised deployment straight into elite power amplifiers. Positioned at the definitive apex of the brand's digital fleet, the CD-35 implements a highly advanced configuration featuring Japanese AKM dual-symmetrical processing architecture. This computational core handles native high-density PCM and SACD streams, feeding directly into a heavy dual-mono analog output stage powered by premium 6H30 and 5687 dual-triodes. Operating with absolute zero global or local negative feedback, the short-path circuitry operates without solid-state buffers or DC servos to protect the fundamental timing of complex recordings. Sonically, the CD-35 delivers a remarkably dense, lifelike, and velvety presentation that captures the pure emotional essence of an analog turntable system. It throws an expansive, cavernous three-dimensional soundstage where voices and instruments possess realistic structural weight, density, and physical presence. The noise floor remains entirely jet-black, providing the perfect acoustic background for low-level hall ambiance, subtle micro-dynamic pitch shifts, and delicate spatial decays to bloom naturally.

Key Features

01

Reference Top-Loading SACD Drive

Features an ultra-stable, heavily isolated top-loading transport layout utilizing an anti-vibration magnetic clamp and a separate acrylic lid to stabilize high-speed optical rotation.

02

Pure Class-A Triode Output Architecture

Deploys an elite dual-mono analog network incorporating 6H30 and 5687 vacuum tubes operating with zero local or global negative feedback for unmatched phase accuracy.

03

Proprietary PCM-to-DSD Upsampling Engine

Equipped with an advanced internal DSP module developed by StreamUnlimited that converts standard 16-bit Red Book CD signals into pristine DSD128 or DSD256 arrays.

04

Discrete Analog Domain Volume Control

Utilizes a highly precise sixty-step volume regulation matrix executed purely in the analog domain, preventing the data loss associated with common digital bit truncation.

05

GZ30 Tube Rectified Power Infrastructure

Driven by twin low-noise R-core transformers, choke filtering, and an on-board GZ30 vacuum tube rectifier to deliver clean, fast-acting current directly to the analog rails.

The Zero Feedback Architecture

Chapter 01

The Zero Feedback Architecture

Ayon engineers believe that negative feedback is a deceptive fix that lowers measured distortion at the expense of natural musical energy. The CD-35 operates with zero decibels of negative feedback of any kind across its entire signal path. This purist topology keeps the audio signal entirely free from phase inversion and artificial dynamic compression, resulting in an immediate, fast-moving transient response that perfectly mirrors a live musical event.
StreamUnlimited Algorithm Optimization

Chapter 02

StreamUnlimited Algorithm Optimization

Unlike basic off-the-shelf conversion chips that apply generic upsampling filters, the algorithmic computing inside the CD-35 was refined over three years of collaborative development. By translating incoming linear PCM packets into native multi-megahertz DSD streams before processing, the player bypasses standard digital ringing artifacts. This unique digital-to-digital filtering architecture restores hidden spatial ambiance and micro-detail buried deep within conventional compact disc collections.
Listening Notes

Chapter 03

Listening Notes

Machined from heavy, non-magnetic aircraft-grade aluminum panels that provide excellent shielding against electromagnetic fields, the CD-35 instantly rewards the listener with a deep, authoritative presentation. Users can toggle between two separate digital filters to perfectly tailor the transient attack and high-frequency roll-off of their system. From subterranean orchestral bass drum thuds to the highest register of female vocal lines, it resolves performance layers with fluid, silken openness.

Specifications

Frequency response20 Hz – 50 kHz +/- 0.3 dB
ImpedanceOutput impedance ~ 300 Ohms for Single-Ended RCA and Balanced XLR
Total harmonic distortion @ 1kHz< 0.001%
Signal-to-noise ratio> 119 dB
Inputs / outputsDigital inputs: 1 x S/PDIF (RCA), 1 x AES/EBU, 1 x I2S, 1 x BNC, 1 x USB, 3 x BNC for DSD / Digital output: 1 x S/PDIF (RCA) / Analog outputs: 1 x RCA, 1 x Balanced XLR
Dimensions (H × W × D)12 × 48 × 39 cm
Weight17 kg
Conversion Rate768kHz / 32 bit & DSD 256
DAC ConfigurationFully symmetrical / AKM-Japan
DSP modulePCM–>DSD
Tube complementGZ30,6H30 & 5687
Output level @1 kHz / 0,775V -0dB Low 2.5V fixed or 0 – 2.5 V rms variable
Output level @1 kHz / 0,775V -0dB High 5V fixed or 0 – 5V rms variable
Digital Output 75 Ω S/PDIF (RCA)
Digital Input75 Ω S/PDIF (RCA) USB- 24/192 kHz & DSD128 I2S, BNC, AES/EBU 3 x BNC for DSD

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