Vox AV15 Analog Valve Amplifier

VOX AV15 Analog Valve Amplifier

The signing tone of a tube amp, the stunning presence... there's a certain sound that can only be attained by analog circuitry and by a tube amp in particular. While multi-voice tube amps do exist, they are few and far between, and hardly ever affordable. The AV series is a new concept in tube amps, delivering versatile tube sound yet excelling in affordability. Featuring 12AX7 driven preamp and power amp sections, these amps feature eight distinct analog preamp circuits that create eight types of tube sound ranging from transparently clean to crunchy chime and modern high-gain. Special attention was paid to the analog design, which is painstakingly constructed from a staggering number of components. The classic tones of the AV range are further enhanced by a customizable tube equipped analog power section and a unique, sealed speaker enclosure for improved resonance. Rounding out the feature set are three high-quality effects including Chorus, Delay & Reverb. These are perhaps the most revolutionary tube amps in all of VOX's long history.

AV Series Key Features

• Eight analog preamp circuits to reproduce the sounds of eight tube amps, from clean to high-gain, with careful attention paid to circuit design and selection of parts
• Pre- and power-amp sections use the 12AX7 dual triode tube, delivering real tube sound
• Four modes modify the response of the vacuum tube peripheral circuitry
• High-quality modulation, delay, and reverb effects are built-in
• The cabinet is constructed with an integrated baffle for efficient sound projection
• The speaker unit is mounted from the front, providing loud, clear, and spacious sound
• A proprietary bass-reflex structure delivers natural sound balance
• Power level control allows the volume to be adjusted while maintaining the tonal character
• Headphone out is equipped with a cabinet simulator for realistic sound & presence
• Send/return and speaker output are provided (AV30/60 only)
• Hi-fi spec AUX input allows an audio input source to be faithfully reproduced
• An optional footswitch can be used to switch channels (AV30/60 only) or effects
• Available in three models: a compact 15W model, or the two-channel 30W/60W models

Analog preamp circuits that provide eight distinct sounds

The preamp circuit that decisively determines the character of the sound uses a completely analog design, and is constructed with a huge number of carefully selected resistors and capacitors. It is actually equipped with eight different analog preamp circuits. In other words, the AV series is able to accurately reproduce the sound of eight classic tube amps. In addition to the coveted AC30 top boost sound, it also covers a wide range of tones from clean to high-gain, including a sound that is reminiscent of the rare AC15 with EF86 tubes.

A 12AX7 is used for both the preamp and power amp

In order to deliver true tube sound, there must be vacuum tubes. The AV series features a circuit design with two triode tube circuits that utilizes the classic 12AX7. The AV15 has only one 12AX7, but by using half of the dual triode in the preamp and the other half in the power amp, it delivers true tube operation for both preamp and power amp sections. The AV30/60 use two 12AX7 tubes, one for the preamp and one for the power amp, delivering an even more dynamic sound. The internally supplied voltage is 60V; this high voltage allows the potential of the vacuum tubes to be fully utilized, and lets you obtain natural and powerful distortion reminiscent of some of the most iconic tube amplifiers.

Four modes can modify the circuit response of the preamp and power amp tubes

Four slide switches allow you to modify the response of the vacuum tube peripheral circuitry. For the preamp tubes, there are two switches: BRIGHT boosts the high frequencies, and FAT boosts the low end. For the power tubes, you can change the operating point of the vacuum tubes by using the BIAS switch to select either a clear and modern sound or an easily distorting vintage sound, and the REACTOR switch lets you vary the amount of feedback to the power amp, changing the damping factor to obtain a more dynamic, wide-ranging, and crisp sound. These changes can be made instantly, allowing you to modify the amp's response in. In spite of these obsessive specifications, sounds can be switched instantly, letting you enjoy a wide spectrum of variation.

High-quality effects

We have paid careful attention not only to the amp sound but also to the effect section. The AV series is equipped with three high-quality effects: modulation, delay, and reverb. Each can be selected independently, giving you the freedom to shape your sound accordingly.

Revolutionary cabinet structure that enhances the sound quality

The cabinet structure of the AV range has a major influence on the sound quality. The baffle and cabinet utilizes a one-piece construction, which allows for the vibration of the speaker to be supported by the entire cabinet, minimizing unwanted vibration and more efficiently emitting the sound. Front-mounting the speaker also achieves a louder and clearer sound that's less directional and more spacious. In addition, the bass reflex design maintains the low range while delivering a more natural sound balance. It goes without saying that this clever design is another significant advantage of the VOX AV series.

Breathing new life into conventional tube amp design

The AV series achieves functionality and expandability, both with a high degree of precision. The headphone amp features a version of the cabinet simulator used in products such as the amPlug series, with additional refinements that allow it to convey an even more detailed sense of airiness. Even when playing your guitar at home or at night, you can enjoy sound that overflows with realistic presence. The AUX input lets you connect an external audio source, and is equipped with a circuit that compensates for the response of the speaker and cabinet, allowing you to hear sound that's faithful to the original source. The AV30/60 provide additional expansion potential with send/return jacks for convenient connection of compact effect units, as well as an external speaker output. With these features, you'll be able to take full advantage of the AV series' capabilities in a wide range of situations.