Radial Headload Prodigy Tube Guitar Amp Attenuator

Want to drive your amp harder for optimal tone? This attenuator gives 50% and silent load options for lowering stage volume, or ditching the cab altogether.

The Headload Prodigy is a combination load box and DI that lets you drive your guitar amp at a higher output in order to maximize the tone, yet produce a lower stage volume when needed.

Like the larger Headload, the Prodigy employs custom made cement-encrusted ceramic-coated resister coils to convert the excessive power from the amplifier to heat and is able to comfortably withstand up to 100 watts RMS. The Prodigy may be used in three different ways, depending on the need: First, it may be used as a direct box via the built-in Radial JDX Reactor. The hugely popular JDX combines a reactive load with a proprietary filter bank to emulate the tone of a 4 x 12 half stack. This features 100% discrete class-A circuitry for optimal tone and transformer isolation to eliminate hum and buzz caused by ground loops. Designed to replace a microphone, the JDX delivers greater consistency while eliminating concerns such as stage resonance, bleed from other instruments and problematic room acoustics which can play havoc on the tone.

Second, the Prodigy may be used as a load box where you can attenuate the output from 100% down to 50% to drive your amp harder while keeping the volume down to a comfortable level. Finally, the prodigy can be used without a speaker cabinet for completely silent recording. This is particularly useful in small venues where the speaker cabinet on stage may conflict with the sound in the room. It is also great for silent recording where you want to take advantage read more of 'high power' amp distortion without upsetting the neighbors.

In order to optimize the playing experience for in-ear monitors, a dual band EQ lets you optimize bass and treble settings. Two additional 1/4" outputs enhance connectivity: The first is direct from the amp while the second is post EQ - post JDX. These are used to feed additional amplifiers or effects and adjusted using the front panel level control. A second level control is used to adjust the built-in headphone amplifier for silent practicing.

Housed in 14-gauge steel to help keep magnetic radiation at bay, the Headload Prodigy features a handy carry handle plus Radial's unique book-end design that creates a protective zone around the switches and controls. The internal I-beam construction adds tremendous rigidity, protecting the sensitive PC board from being torqued which could lead to solder joints going cold prematurely.


- Load box with 100%, 50% and silent attenuation
- Lets you drive your amp hard for best tone
- JDX Reactor direct output for PA and monitors
- Built-in headphone amp for practicing
- 8 ohm impedance
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.
read less

- Audio Circuit Type: Passive attenuation circuit with active equalization
- Frequency response: Shaped to emulate a classic guitar cabinet
- Gain: -30dB/-42dB
- Noise floor: -106dBu
- Maximum input: 130 watts continuous
- Total harmonic distortion: 0.05%
- Intermodulation distortion: 0.05%
- Input / output impedance: 8 ohm speaker load
- Output level - max - 1 KHz: +17dBu
- Output level - max - 20Hz: +14dBu
- Gain reduction: 100%, 50%, 0%
- Equalization: Low EQ: +/- 9dB @ 80Hz
- High EQ: +/- 9dB @ 6 KHz
- Headphone output: 400mW into 32
- Unbalanced line out: Hi-Z 1/4", pre or post EQ
- Balanced line out: 250 post EQ
- Ground lift: Disconnects pin-1 at the XLR input
- Power: Radial +/-15V 400mA power supply
- Construction: 14 gauge steel chassis & outer shell
- Finish: Durable powder coat
- Size: (L x W x H) 10.25 x 5.9 x 3.75" (260.3 x 149.7 x 95.2mm)
- Weight: 5.3lbs (2.4kg)
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 6.75 lbs
Shipping Dimensions: 14 x 9 x 5 in
Manufacturer Part Number (MPN): R800 7068 00

For support or warranty questions, please contact the manufacturer:
Phone: 604-942-1001

Reviewers gave this product an overall rating of 5 out of 5 stars. (2 ratings)
Submitted March 30, 2019 by Jason G in The Villages, FL
"Excellent Attenuator and much more!"
Overall: 5 out of 5 stars
Verified Customer zZounds has verified that this reviewer made a purchase from us.
I had been trying to find something that would allow me to play through a traditional tube amp and pedal board, but with headphones. Frequently I have to use phones, so I was stuck with digital amps with a phone out, not able to use my favorite amp, which I hadn’t bought because of that need. I thought attenuators came in amps most of the time, expensive amps I cannot afford. I did see a device which is a 400$ cab clone with a phone jack, but saw negative reviews for it. I saw that company also put phone jacks in several of their amps, and they only make tube amps. But I could not afford the legendary name. I then asked a sales rep at the largest sweetest online store what might work, and he told me my only choice was from OX, and that unit costs 1200$. I had a couple of great experiences with zZounds so I asked, having lost hope if there was a way. zZounds responded immediately to my chat session question suggesting the Prodigy. I ordered it right away because of the 12 install plan. You can read all the specs but it’s multi level attenuator, up to a 100 watt amp, eq, and a PHONES amp with dedicated volume and eq just for the phones. I bought a brand new Fender Princeton at the same time. I just put a cable between the speaker out and the “from amp” jack on the prodigy. So I hear the guitar, pedal board, amp, just with the phone jack and good audia technica phones. It’s fantastic, it doesn’t suck tone, at all, or add noise, the tone is the same, just in your ears! read more And at 130 in the morning no one knows. Sounds great through the Princeton, my favorite amp ever. Clean, low, crunchy, metal, it preserves it all perfectly. If you can’t play your favorite amp at home, you will LOVE this great tool! And in a gig you can attenuate the amp before it goes to cabinets or the sound board. Amazing life saver, worth every penny! I am so happy with radial I ordered their abc box today.

Musical Background:
20 yrs all kinds of music

Musical Style:
read less
6 of 6 people (100%) people found this review helpful. Did you?
Thanks for your opinion!


  • 8 x
FREE -Day Shipping!
Get it  for
Get it by if you order within
Shipping to