ROCKERVERB 100 MKIII

POSSIBLY THE ONLY 100 WATT HEAD YOU’LL EVER NEED.

Powerful and Versatile

Celebrating its 10th Anniversary in 2014, the Rockerverb Series demonstrates better than anything else that a workhorse amp can be a master of all trades. The original Rockerverb was actually our first ever ‘high gain’ amplifier, with a unique voice that quickly became a firm favourite amongst the heavy crowd. However, its supreme versatility and dependability meant the series has been a mainstay for touring artists and session aces, both on the road and in the studio.

The Rockerverb 100 MKIII head combines over a decade of user feedback with a number of new details and improvements. In a first for the Rockerverb Series, the MKIIIs include selectable output power options to manipulate headroom and volume, with the 100 Watt version switching down to 70, 50 or 30W. The MKIII also features the same footswitchable attenuator that has been so popular with users of our Thunderverb and Dual Dark Series amps.

The Clean channel has been revoiced on the MKIIIs for a more ‘chimey’ response. The clean side now has even greater headroom than previous models, whilst still retaining the warmth and vintage character of a non-master volume design. Also, the valve driven spring reverb now has a more extensive range with a brighter trail. Add to this a host of other hidden refinements and you have the finest sounding and most feature-laden Rockerverb to date.

KEY FEATURES:

HIGHLY VERSATILE TWIN CHANNEL DESIGN

The original Rockerverb gained a cult following on account of its iconic high gain tones. The MKIIIs of course continue this tradition, but these amps are immensely flexible. The Dirty channel goes anywhere from classic British crunch to the very heaviest modern genres, and always maintains outstanding clarity. The non-master volume Clean channel has been re-engineered to take on a more ‘sparkly’ and ‘crisp’ nature but with greater control through a revoiced two band EQ section. The MKIIIs have even greater headroom and volume in full power mode should you need it, but this can now be manipulated with the amp’s output power and Attenuator controls.

FOOTSWITCHABLE ATTENUATOR CONTROL

Output stage saturation at ‘conversation volumes’. The Attenuator circuit is located after the master volume controls and determines when and how the amp distorts after the preamp stage. This means the overall volume level can be reduced, whilst keeping control over the amp’s output clipping characteristics. Unlike a loadbox, our design ensures the all-important relationship between the output transformer and the speaker remains intact, so even at very low volumes the amp remains springy and responsive. Turning the Attenuator control clockwise reduces the overall output level (i.e. increases the attenuation), which can be remotely defeated via a footswitch for a volume boost on either channel for lead lines.

SWITCHABLE OUTPUT POWER

Switching the amp’s output power allows for more control over the headroom and breakup from the output valves. Reduce the output for greater output valve clipping and saturation at lower volume levels. The Rockerverb 100H MKIII features both a ‘half power’ mode which drops the plate voltage on the output valves, and a 2 or 4 valve selector switch for a choice of 100, 70, 50 or 30 Watts.

FOOTSWITCHABLE VALVE DRIVEN SPRING REVERB

Driven by a single 12AT7/Ecc81 valve and a custom transformer, the spring reverb circuit in the MKIII has undergone significant upgrades. It is our richest sounding spring reverb design to date, with a more intuitive and usable sweep, ranging from subtle ‘air’ to full-on surf.

VALVE BUFFERED FX LOOP

For the purist who loves their pedals, our highly transparent effects loop is buffered by a single 12AT7/Ecc81, ensuring an all-valve signal path from input to output.

I tried not to change too much to the clean channel from the MK2 but it has more chime and headroom as players asked for.

Ade EmsleyTechnical DirectorClick to view the interview
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FEATURES:TWIN CHANNEL CLASS A/B GUITAR AMP HEAD, FOOTSWITCHABLE VALVE DRIVEN REVERB, VALVE BUFFERED EFFECTS LOOP, FOOTSWITCHABLE ATTENUATOR & SELECTABLE OUTPUT WATTAGE, DÉTENTE CONTROL KNOBS.
TOP PANEL (RIGHT TO LEFT):INPUT, CLEAN CHANNEL: VOLUME, BASS, TREBLE | DIRTY CHANNEL: GAIN, BASS, MID, TREBLE | REVERB, ATTENUATOR | CLEAN/DIRTY SELECTOR, FULL/STANDBY/HALF POWER, MAINS SWITCH
FINISH OPTIONS:Orange or Black basketweave vinyl
VALVES:Preamp: 4 x ECC83/12AX7 & 2 x ECC81/12AT7
Power Amp: 4 x EL34
OUTPUT POWER:100 WATTS: 4 VALVES (FULL POWER)
70 WATTS: 4 VALVES (HALF POWER)
50 WATTS: 2 VALVES (FULL POWER)
30 WATTS: 2 VALVES (HALF POWER)
SPEAKER OUTPUTS:1×8 OHM OR 1×16 OHM OR 2×16 OHM
UNBOXED DIMENSIONS (W x H x D):55 × 27X 28CM (21.65 X 10.63 X 11.02″)
UNBOXED WEIGHT:24.75KG (54.56LB)

This is traditional British amp building at it’s best.

Guitar InteractiveWatch Review