GRP A4 2013 – ultimate recommendation

This is ultimate recommendation for the GRP A4. Musically speaking, the instrument doesn’t need a recommendation. Although our recommendations up to this point have definitely had some shortcomings.


It’s classified as a “wild analog”, as you can read in our GRP A4 test report. But its gentle smoothness has still to be mentioned. To emphasize this, we have added 4 new sound samples.

GRP are building a second series of 50 A4. If you’re so inclined, make your reservations under


Here is an explanation of the following sound samples:

  • Sample 1. Two GRP A4 and the GRP A8. A4 stereo filter sequence plus strong A4 / A8 solo sound (9 VCOs (:o). Dynamic control via MIDI / masterkeyboard. No filter knob has been touched … it’s all velocity controlled.
  • Sample 2. Creamy A4 lead sound and massive A8 bass voice.
  • Sample 3. Mix soundfile: GRP A4 noise/ringmod sequence + massive GRP A8 bass sound + John Bowen Solaris stereo wavetable pad + Technosaurus Selector stereo filter-FM sequence + second GRP A4 with a very powerful leadvoice.
  • Sample 4. Mix soundfile: GRP A4 ringmod sequence + Technosaurus Selector stereo filter-FM sequence + Roland RS-202 strings / vocals + second GRP A4 with a strong solo-leadvoice (warm brass sound). Enjoy!


Filed under General

“Es genügt, einen Ton schön zu spielen” sagte der Komponist Arvo Pärt im Jahre 2005. Diese Aussage ist ebenso einfach wie ich auch exzellent: Es braucht kein Meer an Tönen, denn entscheidend ist der Klang. Dass so mancher Vintage-Synthesizer der 70er und 80er Jahre teils unerreicht hochwertige Klänge liefert, steht außer Frage. Doch tatsächlich leben wir “heute” in einer nahezu perfekten Zeit. Einerseits hat man – mehr oder weniger – noch Zugriff auf die Vintage Analogen, andererseits wird auch bei Neugeräten die wichtige Komponente des hochwertigen Klanges wieder zunehmend berücksichtigt. Doepfer, Cwejman,, MacBeth, Moog, GRP, Studio Electronics, COTK, John Bowen und andere Hersteller bauen hervorragende Synthesizer, die den “Klassikern” in nichts nachstehen. All diesen (alten wie neuen) “großartigen” Instrumenten ist Great Synthesizers gewidmet. _________________________________________________________ In 2005 composer Arvo Pärt said: “Playing one tone really well is enough”. In other words, it is sufficient to play one tone 'beautifully'. I agree with that. All musical efforts are focused on the sound itself. Although I studied classical music (piano and drums), it’s the electronic sound that inspires me. Synthesizers are the epitome of new sounds and exciting tonal spheres. Today, many companies produce high-quality - excellent! - synthesizers: Doepfer, Cwejman, MacBeth, Moog, GRP,, COTK, Studio Electronics, John Bowen and others. It's their products I'm really interested in ... apart from Vintage Synthesizers, which I have been collecting for 20 years. Subsequent to our former websites Bluesynths and Blogasys, Peter Mahr and I have now created GreatSynthesizers. We hope you like it.