The Radial SB-15 Tailbone is a high-performance signal damper designed to sit at the start of the signal chain and drive multiple pedals without the added noise that often plagues high-impedance circuits.
The ultra-compact design starts with a standard Hi-Z instrument input. The signal is then tamed using Radial's unique Dragster load correction circuit to reproduce the tone and give the impression of being connected directly to the amplifier. The signal is then buffered through a 100% discrete Class A unity gain amplifier. Unlike most others that use ICs or ICs to dampen the signal, the discrete design reduces the need for phase cancellation feedback to produce a more natural and pleasant sound. This is further advanced with the same award-winning Class A buffer found in the Radial JD7 and used by guitarists as diverse as Steve Vai, John Petrucci, Steve Lukather and several others. Once buffered, the Tailbone decreases impedance and susceptibility to hum and hum caused by radio interference and electromagnetic fields. The SB-15 is then capable of covering several distances of 15 meters (50') without noise.
The SB-15 Tailbone is powered by a standard Boss-style 9V power supply (not included). As an added bonus, when using a Tonebone pedal that requires 15V on your pedalboard, you can combine two 9V outputs from your power brick and the Tailbone will convert them to 15VDC and provide the correct voltage polarity. This makes adding a high-end Tonebone to your pedalboard easy!
The Radial SB-15 Tailbone delivers exceptional sound quality, reduces noise and adds the convenience of 15VDC power for your Tonebone.