With the Valvenergy series Vox presents a series of differently tuned overdrive pedals with an analogue tube preamp. The VOX Valvenergy Silk Drive uses four Nutube tubes whose construction follows the structure of classic tube triodes and produces a warm sound rich in overtones with classic tube compression. In addition, there is a special OLED display that shows the waveform changes caused by the respective setting in real time. For professional applications in the studio and on stage, there are three switchable operating modes: Standard , Preamp and Cab Sim . Accordingly, standard guitar amps as well as power amps or interfaces can be connected without any problems. Classic warm blues sounds are the métier of the Vox Valvenergy Silk Drive. The Voicing, modelled after a legendary boutique amp, offers authentic tube compression and a vast and expressive dynamic range. In addition to the 3-band equalizer for bass, mids and treble, it also features a Bright switch, which increases the treble before the distortion stage if desired.
Love it! So far, I've used this Vox Silk Drive going directly into my recording interface as well as the "line" input on my Vox Cambridge50 - sounds warm and creamy in both situations. I also compared its sound going through studio monitors with my Vox AC15, and while the character is different, it's definitely in the same league for both clean and crunch playing.
I've been a NuTube fan since Vox came out with the MV50 miniamps a few years back. While the MV50 Boutique is my favorite, all distort like a 12ax7 tube, but clearer in a way. Compared to the NuTube sound, my Fender, Marshall and Vox tube amps all have a papery kind of sound covering the distorted signal. The NuTube has 12ax7-style warmth when overdriven, but without the papery edge.
But the Vox amps with the NuTubes always had some connectivity issue, such as missing an effects loop, or had extra stuff that got in the way like digital modeling. This Valvenergy pedal has the missing pieces! It's fully analog, so no fizzy sound. Full EQ, and especially the bright switch and mid control, which fix the only tone issue with the MV50 Boutique which is that it can sound a little cold. This pedal has the same character as the Boutique, but with filled-out EQ options. But like the Boutique, if you push it hard with another boost pedal and it just gets creamier, like a good tube amp front end.
The "preamp" output settings don't seem to be boosting the signal, so I'm guessing they're an impedance switch designed to let you plug straight into a sound board or DAW without a DI box - they work great going into my board. And the cab sim setting is wonderful - it seems to be the same as in the MV50s, which I once compared to micing my Marshall 1960 cabinet with a Neumann KM84 and I couldn't tell the difference between the two.