Improving on the design of the original, the Tonebone Bassbone V2 Bass Preamp and DI Box from Radial Engineering is a 2-channel preamp that allows you to connect 1 or 2 basses to a single amplifier, PA, or recording destination, and also includes a boost function and switchable effects loop. Each channel offers independent level control for matching signals, along with independent EQ to suit different basses or styles. A balanced XLR output lets you connect to a PA or recording interface, while the 1/4" amplifier out allows you to hit your amp simultaneously.

A boost/mute switch allows you to either boost your signal, or mute it entirely. The effects send can be switched on and off, and even includes a blend knob that lets you adjust your wet/dry blend, and can be applied to channel 1 or channel 2, or both. A piezo booster allows you to connect a piezo pickup with no signal loss.

2-Channel Bass Preamp    Drive 2 Basses to Amp or PA    EQ & Volume Control Per Channel    Switchable Effects Loop    Boost/Mute Function    Balanced XLR Output    Amplifier Output

2-channel bass preamp

Built-in Radial DI with low-Z balanced out for the PA

Combination power booster, effects loop, and mute

EQ and level controls for each bass

Related Questions and Answers

Q: 1. So the 1/4" thru port acts as both an output bypass and and a single channel input that sums a signal sent out the XLR output?

A: The Radial Engineering ProAV1 Passive Multimedia Direct Box (B&H # RAPROAV1) features front-panel connectors that can also be used as throughputs to allow multiple patch points. A summed mono output is available via the balanced XLR output.

Q: 2. Does the EQ effect the overall output, or just the mic or laptop audio?

A: The EQ controls on the Radial Engineering Presenter Mixer affect the microphone signal only.

Q: 3. Can this be used to convert a headphones level signal (DDJ 800) to a pro line level signal (+4dBu)?

A: The Radial Engineering StageBug SB-6 Isolator is not converting or boosting line level signals, but rather converting impedance (Hi-Z to Lo-Z) and eliminating hum in the signal chain.

Q: 4. The top surface has a "mono/sum" printed on it. Is there a right-side switch which sums both inputs to one of the outputs?

A: The Mono/Sum switch on the right side of the Radial Engineering Trim-Two Stereo DI with Volume Control converts both outputs to dual mono, so using either output will deliver the same exact mono signal, so you have the option of using both outputs or just one output for your setup.

Q: 5. Does this feed though phantom power?

A: According to the Radial manual: Although the DM1 may work in some cases with condenser mics, we do not recommend it due to power on/off transients which could cause the sound system to pop when switching. To be safe, only use the DM1 with dynamic mics.

Q: 6. Can I hook up a compressor to the Insert send/recv and will the compressor be applied across all 4 inputs? Whats the Setup steps

A: Yes, if you connect a compressor to the 1/4" insert of the Radial Engineering KL-8 Rackmount Keyboard Mixing Station, it would be applied across all four (4) input channels.

Q: 7. Regarding the below, could you please explain to me, a novice, what it means to be "wired in parallel with the XLR input." 1/4" TRS Input. Connects from your recording workstation and is suitable for both lo-Z and hi-Z sources. Wired in parallel with the XLR input.

A: The parallel wiring means the 1/4" TRS input and the XLR input are wired so they are independent of each other and each have their own signal path.

Q: 8. Is the talkback button noisy. Is there any noise when you push it?

A: Radial makes high quality studio equipment for professionals. The talkback button should be extremely quiet.

Q: 9. Does this version send a beep through the audio output when it's in pairing mode/when it loses signal with the device? The first version did, hoping this one solved that.

A: No, the Radial Engineering BT-PRO V2 Stereo Bluetooth Direct Box does not send any beep or chime sounds through the audio output when it is in pairing mode or if it loses Bluetooth signal with the device it is connected to.

Q: 10. I have Yamaha MWC12 mixer and would like to record directly with a videa camcorder using beachtec DXA-2T. Can I use the RCA rec out or Dual TRS out to connect to this box and connect to DXA-2T via xlr cable and record stereo sound? Thanks.

A: The Radial PRO AV1 is a single channel output unit that sums the incoming stereo signal to a balanced mono output.