an AC30C2RD with a red finish, an AC30C2-BRG a British Racing Green tolex finish with a grey speaker cloth and the AC30C2 Black Comet; featuring a patterned finish all are identical to the C2. The amp featured an option known as "Jumping" where the High-Normal channel could be linked to the Low-Top Boost channel with a patch lead, whilst the guitar is plugged into the High-Top Boost channel, allowing both channels to sound and create a fuller, thicker overdrive sound. The amp also featured a solid-state rectifier to increase reliability. Controls include a Normal volume, Top Boost Volume, Treble and Bass controls, Reverb Tone and Level controls, Tremolo Speed and Depth controls, a Tone Cut control (to add further control over the higher-frequencies), a Master Volume, and a Standby and Power Switch. A true bypass effects loop, extension cab output and external cab output were also included; as well as an input for the external foot switch (to control Reverb and Tremolo). The amps are produced in China. The amps were released to critical success, garnering awards such as Music Radar's "Guitarist Choice" award. AC30 Handwired (2007) Introduced in 2010, the amp featured Hand-wired turret board construction (against cheaper PCB construction), Birch-ply cabinets featuring solid bracing and a natural high frequency diffuser (versus MDF cabinets and no high frequency diffuser); All-tube design (different from the Custom series tube pre/power amp but solid-state rectifier); ECC83/12AX7 preamp tubes (×3) EL84 power tube quartet; (AC30 models); EL84 Duet (AC15 models); GZ34 rectifier (AC30 models); EZ81 rectifier (AC15 models); came factory-fitted with matched Ruby Tubes to provide extended dynamic range; maintained the traditional VOX two-channel design (Top Boost and Normal. High and Low inputs for each channel); the Normal channel features an additional BRIGHT switch; The top boost channel features a HOT/COOL switch to achieve even more gain. A Master Volume/BYPASS switch completely bypasses the Master Volume section allowing incredible levels of gain and sustain to be achieved. OP mode switch cut the amp's Output Power level in half (30 > 15 on the AC30, 15 > 7.5 on the AC15) allowing higher levels of saturation to be achieved at lower volumes. A Vintage fawn-colored vinyl covering, reminiscent of the 1960 classic AC30 and was available with either Celestion Alnico Blue or Celestion G12M Greenback speakers. A VFS1 footswitch controls the Top Boost channel's HOT/COOL switch was also included. The Heritage series 50th anniversary