Built for high-output bass rigs with extensive tone-shaping control, the Ashdown UK-SO-1200 Shavo Odadjian Signature bass amp head delivers 1200W through dual 600W power sections in a Guitar Center Exclusive design built in the UK. Developed with System of a Down bassist Shavo Odadjian, the UK-SO-1200 combines a 9-band EQ with 12AX7-powered Variable Valve Drive, a one-knob compressor and Ashdown’s Sub-Harmonic Generator for shaping everything from clean bass tones to aggressive overdrive and extended low end. Multiple speaker outputs, a balanced DI, tuner output and effects loop provide flexible connectivity for stage and studio bass rigs.
Dual 600W Power Sections With Extensive Tone Control
The UK-SO-1200 uses two 600W power sections for a total of 1200W of output and flexible speaker pairing. Its 9-band EQ provides detailed control across the frequency range, while Ashdown’s Sub-Harmonic Generator adds synthesized low-frequency content beneath the original signal. A one-knob compressor provides straightforward dynamic control without adding complexity to the front-panel layout.
12AX7 Variable Valve Drive and Flexible Connectivity
A 12AX7 tube powers Ashdown’s Variable Valve Drive circuit, allowing players to blend tube-driven character and overdrive into the signal. Four speaker outputs support expanded cabinet configurations, while a balanced DI output, tuner output and effects loop provide additional routing options for live sound, recording equipment, tuners and external effects.
Developed With System of a Down Bassist Shavo Odadjian
As bassist and founding member of System of a Down, Shavo Odadjian has helped define the low-end foundation of the band’s distinctive heavy sound through bass lines that balance rhythmic drive with aggressive tone and dynamic movement. Developed in collaboration with Odadjian, the UK-SO-1200 brings together the high-output architecture and tone-shaping tools suited to that approach, including dual 600W power sections, Variable Valve Drive, 9-band EQ, compression and sub-harmonic processing. Built in the UK and available as a Guitar Center Exclusive, this signature Ashdown head provides a flexible platform for bassists seeking high-output performance with extensive control over clean, driven and low-frequency textures.
Ashdown Amplification Arrives at Guitar Center
Since 1997, Ashdown has built its reputation on powerful, road-ready amplification trusted by bassists on stages around the world. From its iconic Bass Magnifier amps and bass cabinets to pedals, guitar amplification and artist-driven designs, the family-run company has remained dedicated to giving players distinctive tone and dependable performance while renewing its commitment to UK-built craftsmanship. Guitar Center is proud to partner with Ashdown, bringing the brand’s celebrated amplification legacy to musicians nationwide.