The RNDI’s signature sound is the product of new custom Rupert Neve-designed transformers and class-A biased, discrete FET amplifiers. The carefully orchestrated union of these two elements is key to the RNDI’s unique response, delivering a powerful and vibrant direct sound capable of reproducing the full harmonic depth of basses, guitars, acoustic instruments, and professional line level sources. With portable, powerful, larger-than-life tone for your instrument and amplifier signals, the RNDI is truly the first standalone DI worthy of the Rupert Neve name.
The just introduced Rupert Neve DI is getting a lot of attention. There's a comparison video on their facebook page, and it sounds pretty amazing.
...DI before the interface. (I know because I occasionally use a Scarlett and I happen to own a really nice Rupert Neve RNDI DI box. I got to try exactly what you are talking about) Let me tell you the obvious: if you want to hear a realy quality improvement of your recorded guitar tone,...
Here's the signal chain for the TONEX track: Rupert Neve RNDI > Focusrite ISA One > Focusrite Clarett 8Pre. Then reamped the same track through the real amp as well.