Radial Engineering Twin-Iso

2-Channel Line Transformer

  • For eliminating ground loops
  • 2x XLR in/out
  • Switchable ground/lift
  • Switchable Polarity Reverse 180°
  • Especially suitable to eliminating sub-mixers

Further Information

Multi-Channel Unit Yes
Active / Passive Passive
19" No
Pad switchable No
Gnd/Lift switchable Yes
Powered by battery No
Speaker Simulation No

These are other customers' choices:

Customers who looked at this item have bought these:

Radial Engineering Twin-Iso
24% bought this exact product
Radial Engineering Twin-Iso
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
€295 Add to Basket
Radial Engineering Pro D2
9% bought Radial Engineering Pro D2 €175
Radial Engineering IC-1 IceCube
7% bought Radial Engineering IC-1 IceCube €74
Radial Engineering JDI Stereo
6% bought Radial Engineering JDI Stereo €339
BSS AR133
6% bought BSS AR133 €88
Our most popular DI Boxes
9 Customer Ratings:
  • 5
  • 4
  • 3
  • 2
  • 1
4.6 / 5.0
  • features
  • sound
  • quality
3 written ratings Read all reviews
Total
features
sound
quality
Twin Iso. It works.
Christopher2751, 18.12.2014
I was considering buying one of these isolating boxes for quite a while before I finally plucked up the courage to spend the cash. I needed to isolate my balanced audio interface from my unbalanced power amp because I was picking up some awful ground loop buzzing in my speakers.
It's certainly not cheap but like all Radial products the Twin-Iso is built like a tank and could probably be run over by a car or dropped out of a window and it would be fine. All Radial products I've had have been made to the highest standards, and this is no exception.
For a long time the Twin Iso had Jensen transformers inside. Jensen have made arguably the best transformers in the world for decades, and considering Transformer Isolating boxes are basically just transformers in a box, the transformers have a big impact on the sound (in fact the ONLY thing that has an impact on the sound).
Recently Radial bought the Jensen company and then I noticed the Jensen name disappear from the Twin Iso product description. It was hard to get a straight answer about what exactly that meant for the product, but I went ahead and bought one anyway. I was a little aggrieved when I finally bought the Twin Iso to find Radial's own transformer inside rather than the very well respected Jensen isolating JT-11 series transformer, which was previously used in the Twin-Iso.
Now I guess the question is whether there is any difference in sound quality between these 2 transformers.. The Radial Twin Iso DOES sound very good and as a way to isolate two pieces of equipment without changing the sound it works very well indeed and it made my amplifier silent from all buzzes and interferences that had previously plagued my monitoring setup. There is also no noticeable loss in audio quality when it's used. That being said it still feels a bit cheeky to sell a product for the same amount when it previously used 2 world renowned £100 a piece transformers and now it uses their own in-house made transformers that have no track record, history or documented uses.
So although I would have preferred Jensen transformers inside, it is probably doubtful that any difference in sound quality could actually be heard. The specs for the Radial transformers are in fact very good and Radial have actually been making transformers for a few years now so I'm sure the transformers are of the highest quality (they better be for this price!). I still wouldn't hesitate to recommend this product to anyone who cares about sound quality and needs to isolate two pieces of equipment from each other, just don't expect to find Jensen's inside, if that even matters to you.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Total
features
sound
quality
Does what it has to
unLaXo, 13.12.2017
For separating line signal (+4dB)
Passive device
Rugged Precise - you don't even know that you have this in chain.
It does what it has to. Great device if you need it go for it.
Helpful · Not helpful · Report
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
€295 £262.44
Free shipping incl. VAT

The price in GBP is a guideline price only!

Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
Share This Product
Your Contacts
Phone: +49-9546-9223-35
FAX: +49-9546-9223-24
Phone: +49-9546-9223-30
FAX: +49-9546-922328
Phone: +49-9546-9223-20
FAX: +49-9546-9223-24
Online Guides
DI Boxes
DI Boxes
While we could go into more and more detail about DI boxes and their inner workings, at some stage it’s best to get some hands-on experience!
Online Guides
Recording E-Guitars
Recording E-Guitars
Our aim is to explain the basic process of recording the electric guitar!
 
 
 
 
 
Download
 
 
 
 
 
test results:
Offers include 20% UK VAT and are valid only whilst stocks last. Delivery to the UK costs 10 EUR (approx. £9), free shipping on orders above 149 EUR. Please click here for more on international delivery costs and times. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
(1)
Recently Viewed
Rode Wireless GO

Rode Wireless GO; Digital Wireless Microphone System; ultra-compact and lightweight set of transmitter and receiver; series III 2.4 GHz digital transmission; clip-on transmitter TX with built-in microphone (omni capsule); maximum SPL: 100 dB; Frequency Range: 50 Hz – 20 kHz...

(1)
Recently Viewed
IK Multimedia UNO Drum

IK Multimedia UNO Drum; analog/PCM drum machine; 6 true analog voices for kick, snares, claps, and hi-hats; 12 PCM voices with 54 samples; freely layer analog & PCM sounds with 11-voice polyphony; editable drum sound parameters like level, tune, decay...

Recently Viewed
Native Instruments Komplete Audio 6 MK2

6-Channel Audio Interface 24-Bit / 192 kHz, 2 Mic/Line/Instrument Combo Inputs: XLR/jack 6.3 mm, 2 Line inputs: 6.3 mm Jack, 4 Line outputs: 6.3 mm Jack DC-coupled, S/PDIF input coaxial, MIDI input and output, 2 Stereo headphone outputs: 6.3...

(3)
Recently Viewed
TC Electronic Polytune 3 Noir

TC Electronic Polytune 3 Noir; Effects Pedal for Electric Guitar; compact polyphonic tuner/buffer, tuner in effectpedal size, Bonafide buffer circuitry preserves your tone through long cable runs and multiple effects, polyphonic tuning - tune all strings simultaneously, fast chromatic tuner...

Recently Viewed
K&M 21427

K&M 21427, professional carrying case for 6 microphone stands, includes castors for easy and comfortable transport, case made of extremely durable 1680D nylon fabric, all seams hand-stitched in high quality, padded carrying handles and a durable zipper, castors included, dimensions:...

Recently Viewed
RCF Art 312 MK III

RCF Art 312 MK III - full range passive speaker, 12"/1", 300W, 90x70° 12" woofer and 1" driver with 1.5" Mylar diaphragm, 8ohm, 127dB max, Speaker Twist in/out, plastic housing, pole mount adapter, 4 x M10-Flying points and 3 handles,...

(1)
Recently Viewed
Jazzlab saXholder PRO

Saxophone holder For Baritone, Tenor, Alto, and Soprano saxophones, Transfers the weight evenly across both shoulders, No load on the cervical vertebrae, Can be adjusted quickly with one hand, Space-saving: Smaller than a sheet of paper when folded, Comfortable...

(2)
Recently Viewed
Harley Benton Custom Line Thunder 99

Guitar Power Amplifier in Pedal Format Compact power amp pedal for electric guitar, For direct connection to any preamp, pedal or effects unit, Power: 2 x 50W to 4 ohms, For 4 - 16 ohm speakers, Master volume controller,...

Recently Viewed
J. Rockett Audio Designs The Dude V2

Effect pedal for electric guitar Overdrive, Delivers classic D-Style ODS sounds and feel, Less aggressive volume controller than previous version, True bypass, Controls for Level, Ratio, Treble and Deep, Bypass footswitch, Input / Output: 6.3mm mono jacks, Metal housing,...

Recently Viewed
K&M 21316 Select

K&M 21316 Select, large carrying case for speaker and hand crank stands, case made of extremely durable 1680D nylon fabric, all seams hand-stitched in high quality, padded carrying handles and a durable zipper, dimensions: 1200 mm, weight: 2,1kg, colour: black

Recently Viewed
Jazzlab saXholder PRO XL

Saxophone holder For Baritone, Tenor, Alto, and Soprano saxophones, Transfers the weight evenly across both shoulders, No load on the cervical vertebrae, Can be adjusted quickly with one hand, Space-saving: Smaller than a sheet of paper when folded, Comfortable...

(1)
Recently Viewed
the t.bone free2b

the t.bone free2b, microphone wireless system, 2.4 GHz wireless plug-on microphone system for dynamic mics, without phantom power, plug-n-play XLR transmitter & receiver, 2.4 GHz band, 32 bit / 48 kHz hi-resolution audio quality, 6 channels, transmission range up to...

Give Feedback
Feedback Found an error or want to give us feedback about this page?

We're looking forward to hearing from you and aim to solve any problems as soon as we can.