AV Lounge

High Fidelity Audio

Crossfire Evo Delta PA

Ayon Audio · Stereo / Evo Stereo

Crossfire Evo Delta PA

Pure single-ended triode performance of uncompromising musicality and holographic realism.

The Crossfire Evo Delta PA represents the pinnacle of Ayon Audio's single-ended triode development, drawing upon the proprietary AA62B-S power tubes to achieve a rare level of musical fidelity. As an uncompromising power amplifier, it is designed for those who seek the direct, tactile connection to the music that only a high-current, DHT-based design can provide. At the core of its architecture is a commitment to the shortest possible signal path. By employing a zero-negative-feedback circuit and avoiding all solid-state devices, the amplifier preserves the raw harmonic structure of the signal. This purist philosophy ensures that the music unfolds with natural fluidity, maintaining the delicate balance between macro-dynamic impact and micro-dynamic nuance. The sonic signature is defined by its stunning holography and a remarkably clean, grain-free backdrop. It reproduces the atmosphere of the original performance with clarity and resolution, offering a relaxed yet highly involving experience. With its redesigned EVO-generation power supply and custom wide-bandwidth transformers, the amplifier maintains authoritative control and stability, even when tasked with driving challenging loudspeaker loads.

Key Features

01

Parallel single-ended triode circuit

Features four Ayon AA62B-S power tubes to provide high peak current and voltage delivery, ensuring stable performance.

02

Zero-feedback topology

A completely feedback-free design ensures the signal path remains direct and uncoloured, preserving the natural harmonic structure.

03

Tube-regulated power supply

Utilises a 5U4G tube regulator and quadruple choke filtration to provide a silent, stable backdrop for the amplification stages.

04

Super-wide bandwidth transformers

Custom-engineered output transformers deliver high current in the bass while maintaining high-frequency speed for superior transient response.

05

Dual grounding system

Switchable grounding topology improves noise rejection, creating an exceptionally quiet background for improved micro-detail resolution.

Design & Philosophy

Chapter 01

Design & Philosophy

The Crossfire Evo Delta PA is governed by the belief that circuit simplicity is the greatest asset in audio reproduction. By stripping away non-essential components and focusing on the directness of the single-ended triode design, Ayon ensures the amplifier acts as a transparent window. The dual-choke filtered power supply is central to this design, providing complete isolation between amplification stages and ensuring the high-speed energy delivery required for accurate transients.
Build & Materials

Chapter 02

Build & Materials

Every unit is hand-assembled in a high-grade, non-magnetic, brushed anodised aluminium chassis designed to suppress mechanical vibration. The construction incorporates custom beryllium-copper tube sockets, high-speed coupling capacitors, and point-to-point internal wiring to eliminate signal degradation. This meticulous attention to detail extends to the engraved paneling and resonance-absorbing aluminium feet, resulting in a masterpiece of craftsmanship built for decades of reliable service.
Listening Notes

Chapter 03

Listening Notes

Listeners can expect a holographic 3D soundstage that extends well beyond the speakers. The performance is characterised by a liquid, transparent midrange and a fast, punchy bass that defies traditional single-ended limitations. It is an extremely engaging amplifier that excels at revealing the atmosphere and subtle emotional cues of a recording, providing a fatigue-free and authentic musical experience.

Specifications

TypePure Class A, single-ended triode stereo power amplifier
Frequency response8 Hz – 35 kHz / 0 db
Impedance4 and 8 Ohms
Power handling2 x 50 Watt
Dimensions (H × W × D)25 × 52 × 42 cm
Weight52 kg
Tube Complement4 x AA62B
Input Impedance at 1 kHz100 KΩ
S/N ratio at full power98 dB
NFB0 dB
Inputs & Output1x RCA In, 1x XLR In