SOLD - Vox AC30 HH 50th Anniversary Head & Cab – 2007

by Vox

$1,395.00 $1,595.00 20112


Review from Music Radar -

The very term Vox AC30 exists in the guitar world as if it were some single, identifiable thing. Yet in reality - just like the Fender Twin - the model has changed wildly over the years with any number of updates, reissues, signature models and more.

Celebrating Vox's 50th Anniversary, their Heritage Collection amps boast hand-wiring among their features. Hand wiring is of course greatly desirable in delivering a tonal quality above that of most circuit board amp designs. But this method of construction can be extremely labour intensive and therefore costly. Thus these amps are designed in the UK, but built in Vox's Chinese facility, which has previously proven its worth with Vox’s Custom Classic series.

The big news for the Heritage Collection AC30s are the choices for the two channels. Most Vox enthusiasts agree that a mid sixties Top Boost is the number one AC30 sound, so that is the basis for channel two.

Controls are minimal with a single volume pot, the Top Boost bass and treble circuit, plus a pair of inputs for high and low gain. Channel one, meanwhile, is built on the venerable EF86 preamp valve, a feature of some 1950s Vox amps and re-popularised in the 1990s, principally by the excellent Matchless DC-30.

According to many amp designers it's a difficult valve to work with, partly because good new ones are in short supply and partly because it's a feisty little blighter electronically. In addition to the single volume pot - gain and master all in one - you have a three-position brilliance switch, a two-position bass shift and finally the option of running the EF86 valve in triode or pentode mode. The latter offers the full gain potential with a fatter, juicier response, while triode returns a cleaner sound and more headroom.

The two final features work across both channels. The first is Vox's top cut, which cuts high frequencies after the main preamp sections, and last but not least is a triode/pentode switch for the quartet of EL84 power valves. According to Vox, this drops the power from the full 30 (pentode) to 15 watts in triode, enabling you to squash the power amp a little more at lower volume levels.

Save for a couple of speaker outputs, that's it. There's no reverb, no tremolo or vibrato, no effects loop. You don't even get a standby switch - it's automatic on.

The AC30 Heritage Collection chassis follows the traditional Vox 'L' shape design, with power and rectifier valves sat vertically on the 'foot' of the L between substantial mains and output transformers, while the preamp valves also sit vertically on a small bracket inside the vertical part of the L.

Access to preamp circuitry is good, not so to the output stage - if you need to change an EL84 you have to remove the chassis to do it. Layout and component standard is pretty good, with the preamp and power supply circuits built up on hybrid PCB/turret boards - the resistors and capacitors are wired to small nickel silver turrets in traditional fashion, with PCB traces replacing the wire links you'd see on an original Vox.

This means that servicing is relatively easy, while the PCB links offer improved reliability and consistency, as well as more freedom in component placement. The EF86 preamp valve is covered in heatshrink, to help reduce microphonic ringing at higher volume.

EF86s always were pretty unreliable - like the early EL84 valve they were intended to sit inside radios and record players, not get shaken apart in a guitar amplifier. The heatshrink might reduce cooling a little but this isn't going to be a big problem as the EF86 doesn't get as hot as an EL84.

The overall quality is up there with the rest of the modern Vox range - solid, reliable and value for money.

Despite the ostensibly spartan control panel, channel one is capable of a wide range of tones and textures from that hoodlum EF86. The high- and low-gain input options are separated by 6dB, so with a Strat's single-coils, for example, the higher gain input feels right: strong and full. If you want clean sounds from humbuckers, it's worth experimenting with the lower gain input.

The core tone is open and breathy as you'd expect from Vox - crystalline highs, but with fatter mids and a more furry edge to the drive than the Top Boost channel. There's no master volume, so if you want drive you have to turn it up; a natural, vintage-flavoured overdrive sets in around 10 o'clock with the EF86 in pentode mode.

With the power amp set to the full 30 watts, we're talking serious volume by now. Flick it to half power and you can enjoy more drive without popping those eardrums; everything smooths off for a rounder, more compressed tone.

Still in channel one, the bass shift function tightens the bottom end to remove some of the mud from 'buckers, and is especially welcome at higher volumes where you can lose note definition on low notes and chords.

At the other end of the frequency spectrum, the brilliance control replicates the early AC30 'treble' circuit and the classic 'brilliant' channel respectively.

And all that before we've even plugged in to the Top Boost circuit. Now this is the Vox sound, no question, with those powerful, interactive tone controls - everything at two o'clock or thereabouts with a Strat - it's just pure Vox magic.

The cabinet being sold with this AC30 HH 50th Anniversary Head is not the matching blonde tolex that was originally sold with the head. It is a later Vox 2 x 12 cab in black tolex, housing two nice Celestion G12 speakers.

Despite the name, the Heritage Collection hand-wired AC30 is definitely not a mere exercise in nostalgia. With the fabled Top Boost channel on one side and the EF86 preamp on the other, this amp delivers perhaps the most desirable set of tones yet from a modern AC30.

Both the amp head and cabinet come with their custom made covers in new condition.


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