GRP A4 – Series 2015

Paolo Groppioni never dreamed that his GRP A4 synthesizer would be such a success. The synth is now in its 4th edition. To be honest, that doesn’t mean that thousands and thousands have been sold: really, truly, less than 150 GRP A4 have been built up to now. Handcrafted thru and thru, of course …

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Despite strong competition on the lively market, the GRP concept remains singular (as it will in the future).

The synth has, as we all know, 3 VCOs, 2 sub-oscillators, 2 VCFs, ring-modulation, cross-modulation, S/H, 2 loopable envelopes, 2 LFOs (and much much more, including a tricky 2×8 step sequencer).

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The BEAUTIFUL and UNUSUAL remains the comprehensive, pre-wired modulation matrix. That sets the GRP A4 apart!

Need to route VCO 3 to VCF 1 frequency? No problem, just turn a knob and specify the exact amount of modulation. Need to route sequencer track A to LFO 1 speed? No problem, just turn a knob and … well, you get it!

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Or … you need to synchronize Sample/Hold with LFO 1, the sequencer and auto-pan? Flip a couple of switches and that’s it …

In addition to this myriad of modulation possibilities, you also have precise dynamic controllability via MIDI at your fingertips. Exclusive ranges of expression, subtle sophistication.

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Velocity, aftertouch and MIDI Clock can be routed to many of the instrument’s parameters. Given, of course, that you do know how to play a keyboard (or, at least, how to program a software sequencer to get that dynamic control you’re aiming at).

As the cream-with-cherry-topping on the huge amount of information you already have about this instrument, we offer you our GRP A4 test report. Lots of synth details, lots of soundfiles … read about, think about …

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For those wishing to study / print the GRP A4 in detail, here is the complete A4 Panel as a JPG download. We also offer 8 new soundfiles, the result of a spotaneous session triggered by an itch to just have fun with this extraordinary synthesizer …

GRP A4 – for orders / information contact Paolo Groppioni:
Email: .

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GRP A4
Synthesizer / Sequencer / MIDI / CV+Gate

Price: 3.777 Euros + VAT + shipping costs

Website: www.grpsynthesizer.it

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