lidl e Posted January 8 Share Posted January 8 (edited) i understand the answer is likely "more headroom" but what does that mean in this case? you can run a hotter (active?) signal into it without distorting? https://www.boostguitarpedals.co.uk/products/signal-cheyne-sirius-parallel-blender on another note, anyone know this crowd? Any good? Also, can someone let me know the price in £££. it only shows euros for me. Edited January 8 by lidl e Quote Link to comment Share on other sites More sharing options...
Daz39 Posted January 8 Share Posted January 8 £124.99, zoiks! 1 Quote Link to comment Share on other sites More sharing options...
lidl e Posted January 8 Author Share Posted January 8 1 minute ago, Daz39 said: £124.99, zoiks! cheers. €148.95 does seem like a lot, but it really fills a need in my head... Quote Link to comment Share on other sites More sharing options...
mouthmw Posted January 9 Share Posted January 9 8 hours ago, lidl e said: i understand the answer is likely "more headroom" but what does that mean in this case? you can run a hotter (active?) signal into it without distorting? Precisely. Higher headroom means it takes a stronger (louder) signal before it starts distorting / compressing. In some cases, the tone itself can feel bigger, more 3D, more expansive. 1 Quote Link to comment Share on other sites More sharing options...
badger Posted January 9 Share Posted January 9 maybe some electronics guru can correct me, but instrument signals are a few hundred mV at peak, so I would have thought that 9V would have been ample as a supply. I've always thought the whole 18V supply thing was "more is betterer" marketing guff, or maybe pedal companies just like selling more units after customers fry their 9V pedals with an 18V supply. 🤣 1 Quote Link to comment Share on other sites More sharing options...
Jerry C Posted January 20 Share Posted January 20 On 09/01/2024 at 03:14, badger said: maybe some electronics guru can correct me, but instrument signals are a few hundred mV at peak, so I would have thought that 9V would have been ample I've put basses on an oscilloscope and some can easily have transient peaks as high as 2V when played hard. Yes, the average level tends to be in the hundreds of mV, but they're very peaky. Having said that, I've never felt that 18V was necessary. One can always use rail-to-rail op amps that can make full use of the 9V supply. That ought to be enough headroom for anything I can think of in an electric guitar/bass. 1 Quote Link to comment Share on other sites More sharing options...
itu Posted January 21 Share Posted January 21 15 hours ago, Jerry C said: One can always use rail-to-rail op amps that can make full use of the 9V supply... ...when battery is fresh, and the circuitry enables full scale. ±4.5 V is pretty much on the preamp side. Quote Link to comment Share on other sites More sharing options...
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