The Orange Dark Terror Head Amplifier takes the Tiny Terror and adds an extra 12AX7 to the preamp to give 4 stages of gain. For sale online and in our Glasgow shop. Fast UK dispatch and delivery service. Orange Amps have replaced the tone knob on the DA15H with a shape control found on the TH series and include a valve driven FX loop. The result is a 15w All valve Heavy Rock and Metal monster that can power up a full stack and also be switched down to 7 watts.The Orange Dark Terror gives you a portable head package perfect for most gigging and rehearsal situations. Complete with Padded Gig bag.