Line 6 TonePort KB37, TonePort UX8, TonePort DI, GX, UX1, UX2 manual Citrus D-30, Class A-30 Top Boost

POD Farm 1.01 – Model Gallery

Citrus D-30

In 1968, in a little music store on Old Compton St. in London, Clifford Cooper was having trouble getting amplifier manufacturers to take him seriously as a dealer, as they thought he was too young, and his shop too small. So he did what seemed only logical to an enthusiastic young man with a background in electrical engineering – he designed and built his own amplifiers. Since he had come into a large quantity of bright orange vinyl that was what he used to cover his cabinets. It wasn’t long before high-profile musicians like Fleetwood Mac, Stevie Wonder, and Frank Zappa were beating a path to his door. This model is based on an Orange®AD30TC head, a 30 watt, Class A number with a great personality that gracefully marries vintage British mid-gain breakup with modern shimmer and presence. Back off the drive and you’ll get chimey boutique tones, dig in with the drive up and the AD30 purrs pure Brit Rock tone.

*All product names are trademarks of their respective owners, which are in no way associated or affiliated with Line 6. These product names, descriptions and images are provided for the sole purpose of identifying the specific products that were studied during Line 6’s sound model development. ORANGE® is a registered trademark of Orange Musical Electronic Company, Ltd.

pReturn to Model Gallery List

1967 Class A-30 Top Boost

The 1967 Class A-30 Top Boost model is based on* a Vox® AC 30. Music was changing in the early ‘60s and guitarists were asking for more brilliance & twang. So the Jennings Company, makers of Vox® amps, decided to add Treble and Bass controls (and an extra 12AX7 gain stage, incidentally) in addition to the Treble Cut knob it already had (which in actuality was a sliding bandpass filter that always seemed like it was working backwards); this additional circuit became known as Top Boost.

The AC 30 with Top Boost was the amp made famous by many

British invasion bands. Much of the unique character of the Vox® sound can be attributed to the fact that Class A amps overdrive in a very different way than Class AB. Brian May of Queen, Mike Campbell of Tom Petty’s Heartbreakers, and The Edge of U2 have all used classic AC 30s to make their music. Although usually played fairly clean, a cranked AC 30 has a great saturated lead tone, a la Brian May on the early Queen albums.

On this Amp Model, the Middle control acts like the original Cut knob on the AC 30. We plugged into the Hi gain input of the AC 30’s Brilliant channel when creating it. We also turned the tone controls around, since original Top Boost amps had the bass and treble turned all the way down when the knob was all the way up. Go figure.

VOX® is a registered trademark of Korg Europe Limited and is in no way associated or affiliated with Line

6.These product names, descriptions and images are provided for the sole purpose of identifying the specific products that were studied during Line 6’s sound model development.

pReturn to Model Gallery List

6•5