Radial Bassbone, Tonebone :: Dual Input/2 inputs Basses and Guitars Accessories at Bass Direct: Radial, Warwick, UK, London, Manchester, Birmingham, USA, EU for sale


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RADIAL TONEBONE BASSBONE - £249 free UK shipping - in stock


  1. 2-channel bass pre for 1 or 2 basses

  2. Built-in direct box with XLR output

  3. Combination power boost and effects loop

  4. Powerful EQ and contour controls

  5. Separate always-on tuner output

The Radial Bassbone is a power-packed bass preamp that combines real-world functionality with amazing tonal control, making it the ideal front end for live performance and studio recording.

Designed as a bass command centre, the Bassbone features two separate channels with independent level controls and powerful EQ to let you perform with two basses on stage and instantly select between them with a footswitch. With Bassbone in your rig, each bass is treated separately - no more compromising!

On-demand access to the combination effects loop and power booster lets you introduce effects and gives you that extra kick when needed. The Bassbone is also equipped with a built-in Radial direct box that sends 'your sound' to the mixer the way you want it. There's even a separately buffered tuner out that lets you monitor and tune on the fly.

Bassbone - the ultimate command centre for serious bass players.


Many bassists today use two instruments, typically with very different levels and sounds eg: a traditional Fender® style passive and a 5 string active. We designed the Bassbone to allow switching instruments without having to re-adjust tone and volume at the amp. This is done with two channels and an EQ with enough power and versatility to override the bass amp’s tone settings!

The Bassbone can also be used with one bass – with a different tonal setting for each channel, you can sound like two distinct instruments simply by switching channels.

Also included is a power-booster with variable gain and a switchable outboard effect loop which can be used individually or together. For example: introduce a flanger with boost for soloing. A balanced output sends the signal to a mixer with all your sound settings (level, EQ, effect loop), eliminating the need to carry a bass amplifier to coffee house gigs. There's even a bass-friendly tuner out!


The Bassbone is extremely powerful, yet simple to operate. There are two instrument inputs and two separate signal channels with separate level and EQ sections for each. Output can go to an amp, mixer or both. Effects and boost can be brought in or out with the press of a footswitch.

The Bassbone is not limited to bass either. It works great with guitars, mandolins, dobros, banjos and other acoustic and electric instruments in addition to bass instruments.

Hookup is straightforward whether you are using one bass or two. When using only one instrument, connecting to input-1 will still allow the use of all of channel-2's benefits and features with one press of the 'toggle' footswitch. The section below describes how the Bassbone can be used in various scenarios.

The Radial Bassbone comes equipped with a special 15-Volt power supply that provides greater headroom than typical 9V supplies. Connecting the power supply automatically turns the Bassbone on.

Check out the Pedal Snake stage solutions here

Quality pedal boards here

For connecting leads see here

  1. See also;

  2. Lehle Bass IQ

  3. 3 Leaf Enabler

  4. EBS Microbass II


Input impedance: 470k ohm at input jack

Output impedance: 10K Ohm

Balanced XLR

Output impedance: 600 Ohms

LED indicators: Large 3 mm OD ultra-bright LED's

CH-1 CONTOUR - Shape-1:

+4.5 dB @ 110 Hz

-5.1 dB @ 650 Hz

+2.7 dB @ 4.3 Khz

 CH-1 CONTOUR - Shape-2:

+3.7 dB @ 75 Hz

-6.3 dB @ 350 Hz

+11 dB @ 5.6Khz

Channel-2 three-band EQ: 

Bass:  +/- 12dB @ 75 Hz

Mid: +/- 10dB @ 470 Hz

High : +/- 16dB @ 5.6 KHz

Boost level: Unity gain to +12dB

Switching: Heavy duty mechanical switches

Ground lift: Lifts ground at XLR output pin-1

Construction: 14 gauge steel, baked enamel finish

Size: 6.9x4.25x2.125" (175 x 108 x 54mm)

Weight: 2.35lb (1.06kg)

Download the Tonebone PDF user manual manual-bassbone.pdf

Download the Tonebone PDF smart sheet smartsheet-bassbone.pdf

Radial Endorsees

Tony Levin

(Peter Gabriel, King Crimson)

"When I can't take a big custom switching rack on the road; I've always had troubles with varying outputs. Enter the Bassbone - exit the problem. I have found the Bassbone indispensable for my small and medium touring rig. It evens the outputs of bass and Stick, gives me boost capabilities when I need it and holds up solidly through the wear and tear of one nighters. I've just come back from Europe and Russia, where the device held up to the real world of touring, rough treatment and varying voltages. The Bassbone was there doing it's job for me every night - my sound engineer is ecstatic!"  

~ Tony Levin

John Patitucci

(Chick Corea, Wayne Shorter, Roben Ford, Stan Getz, Freddie Hubbard, GRP recording artist)

"I can use my electric and acoustic basses while using only one channel on my amp... and my sound gets sent to the PA system by a clean, built-in DI that sounds consistently great!"  ~ John Patitucci

Nathan East

(Eric Clapton, Lionel Ritchie, Phil Collins)

"The Bassbone is just what I have been looking for... I can maintain the integrity of two instruments on stage or in the studio with control over the balance and keep my high standards for my low notes!"  ~ Nathan East

Al Caldwell

(Vanessa Williams, Chuck Rainey)

"I used the Bassbone on the new Vannessa Williams CD and it was incredible. I'm making it a permanent part of my setup.""  ~ Al Caldwell

Will Lee

(Letterman show - CBS Orchestra)

"The engineers at Radial have made it simple and straight-ahead for us musicians who don't necessarily want to become 'on-the-gig programmers' (if you know what I mean). Whether I'm in the studio or playing live, I'm never without my Bassbone!"   ~ Will Lee


Tel: 01926 886433

Nine months interest free credit on up to £5000 on Instrument purchases! For UK residents aged between 16 and 25.