Ever recorded a guitar track and when tracking thought ‘yeah that guitar tone is killer’ only to find when you come to the mix stage it is a bit lack lustre and not quite right. This is a widely used technique by many artist including Joe Satriani, for a bit more history check out the reamp website. I no longer have any commercial connection to the company.Ive been messing about with some reamping techniques for guitar and thought I would share this extremely versatile technique. The original pedal was quite expensive (but WAY cheaper than some much less sophisticated 'booteek' pedals!) and is a bit on the large side but there is now a second generation of normal dimensions and requires a standard 9V line lump supply. It is NOT a "diode clipper" This circuit is primarily used to control the drive to the triodes AFAIK and it is the valve stages that deliver the vast majority of the OD effect. The Dual pedal is a hybrid of valve and op amps and does include a parallel feedback diode 'compressor'. There is greater bass cut in the two distortion modes but maybe still enough to be useful. The HF response is about 10dB down at 10kHz but guitar speakers have mostly given up the ghost by then! Just looked up the response speccs for the Blackstar* HT-Dual pedal and I find the response on the clean channel is some 6dB down at 100Hz ref 1kHz with the bass control at max (as Wonks says, guitar pedals all tend to cut LF severely as standard). Or try using a parallel signal path, so you have a clean and a driven track, and you mix in the driven sound with the clean sound to taste. You’d really be better looking at valve based mic preamp/DI units with gain and master/final volume controls that are designed to provide a reasonable level of valve ‘warmth’ whilst still giving a pretty clean signal path. You may do better with an all-valve based drive pedal that doesn’t employ diode or op-amp clipping but you need to be careful that despite sporting a valve or two, the pedal doesn’t also employ some solid-state clipping as well. So you are unlikely to find a guitar pedal that doesn’t have a significant level of high pass filtering.Īnd low pass filtering is there to stop the resulting clipped signal being too ‘fizzy’ (due to all the added high-frequency harmonics), despite the guitar speaker already acting as a low-pass filter at around 5-6 kHz.Ī more sophisticated pedal could in theory have the low-pass frequency adjusted in line with the amount of gain employed, but that will put the price and complexity way up, increase the pedal size, and it’s not required for guitar applications.įor gentle ‘warming’ applications, guitar pedals are therefore not a good choice. As a lot of ‘50Hz’/‘60Hz’ hum picked up from guitar amps is 100Hz/120Hz hum as it comes from after the rectification stage, the high pass filter needs to be set quite high to remove this hum. So the pedals have to have a high pass filter to get rid of any hum pickup. This hum signal will also get clipped, adding lots of harmonics to the hum signal that aren’t harmonically related to the guitar signal. Guitar overdrive pedals are pretty basic devices.īecause of the amount of gain that can be applied before the signal amplitude is limited to get the distortion effect, often using diode diode clipping, 50/60 Hz hum picked up by the guitar can easily be amplified so that it ends up with a final amplitude similar to the overdriven/distorted guitar signal.
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