Grp Synthesizer A10: Flagship Analog Synth Costs €12,000

TL;DR: Grp Synthesizer has unveiled its A10 flagship, a monster analog synth with four VCOs, four filters, analog effects, and a built-in sequencer — all for a wallet-crushing €12,000 (€10,000 if you preorder before Superbooth ends). Preorders are open until this week’s show, but you can’t hear it yet because the prototype doesn’t make sound. Shipping starts late 2026, with delivery likely slipping to spring 2027 due to high demand.

• Price: €10,000 + VAT during preorder (until end of Superbooth), then €12,000 + VAT — a €2,000 penalty for hesitation.
• Configuration: Single massive voice or two independent sound sources via keyboard split, sequencer, or arpeggiator.
• Engine: Four VCOs with SuperWave waveforms, two filter banks (each with dual topologies), two VCAs, three LFOs, and semi-modular internal routing.
• Effects: First Grp synth with integrated analog effects — wavefolders, BBD stereo delay, triple resonator filters, dual phaser, and spring reverb.
• Sequencer: 24-step, three rows of eight steps, independent envelope triggering per section.

Reading time: 6 min

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The “Ultimate” Claim

We at Noxal have heard the word “ultimate” thrown around so many times that we’ve considered adding it to our bingo card. But Grp Synthesizer, the Italian boutique outfit known for their meticulously crafted analog gear, might actually have earned the right to use it. The A10 is their new flagship, and judging by the spec sheet — which reads like a synth nerd’s fever dream — they’ve decided to ignore the usual compromise of cost versus features. Instead, they’ve crammed in everything short of a built-in espresso machine.

Now, I’m not saying the A10 is the best synthesizer ever made. I haven’t heard it. Nobody has, because the prototype at Superbooth is a mute sculpture. But on paper, it’s a staggering piece of engineering. Four VCOs, two filter sections each with dual topologies, two VCAs, three LFOs, analog effects, and a sequencer that could drive a small modular system. It’s the kind of synth that makes you wonder if Grp’s engineers have ever slept.

Inside the Beast

The heart of the A10 is its voice architecture. You can run it as a single, massive voice or split it into two independent sound sources — think keyboard split, dual sequencer, or arpeggiator control. The oscillators are four VCOs, each with classic waveforms (saw, square, triangle, sine) plus a SuperWave function that turns them into super-saws, super-squares, super-triangles, and super-sines. Yes, it’s as absurdly lush as it sounds. Add PWM, hard sync, cross modulation, FM, a sub-oscillator, ring modulation between oscillators three and four, and noise, and you’ve got more oscillatory firepower than most modular racks.

The filter section is where things get truly ridiculous. Two filters, each with two topologies. Filter 1 offers -12dB Vactrol or -24dB Transistor Ladder (LP1 to LP4, with or without gain compensation). Filter 2 gives you -18dB Diode Ladder or -12dB State Variable Filter (HP2, BP1, LP2, BR1, BR2). Both are resonant. You can route them in parallel, serial 1-2, or serial 2-1. That’s four filter personalities in one box, which is more than most of us have in our entire studios.

Effects and Sequencing

This is Grp’s first synth with integrated analog effects, and they’ve gone all out. Inside the signal path you’ll find two voltage-controlled wavefolders, a BBD stereo delay with independent sync per section, two triple resonator filters, a dual phaser, and a spring reverb with two independent tanks. That’s not just a reverb — it’s a reverb that can be split across the two synth sections. The wavefolders alone would cost you a small fortune in Eurorack form.

The sequencer is borrowed from Grp’s standalone R24, which is already a cult classic. It’s 24 steps arranged in three rows of eight, with independent triggering for each synth section’s envelopes, plus pitch and CV control. This isn’t a basic step sequencer — it’s a performance tool that lets you build complex, evolving patterns without touching a DAW. If you’re the kind of person who hates cables but loves modular-level control, this is your jam.

Pricing and Patience

Let’s talk money. The A10 costs €10,000 plus VAT during the preorder window — which ends at the close of Superbooth this week. After that, the price jumps to €12,000 plus VAT. A deposit of €1,000 is required, followed by a second prepayment of €2,000 three months later. Grp says they hope to start shipping at the end of 2026, but with over 40 units already preordered, delivery for new orders likely won’t happen until spring 2027.

That’s a lot of waiting and a lot of cash for a synth you can’t even hear yet. But let’s be honest: if you’re in the market for a €12,000 analog synth, you’re probably not worried about mortgage payments. You’re the kind of person who buys a Ferrari and then asks about the cupholders. The A10 is a collector’s piece, a statement, and a tool for those who want the absolute pinnacle of analog synthesis without compromise.

Market Context

Where does the A10 fit in a world of $600 Behringer clones and $2,000 flagship polysynths? It’s a boutique instrument aimed at studios, wealthy hobbyists, and collectors who value craftsmanship over mass production. Grp has always been a small operation — they build everything in Italy, by hand, and the A10 is no exception. The price reflects not just the components, but the labor, the R&D, and the sheer audacity of designing a synth this complex.

We at Noxal see the A10 as a benchmark. It’s not for everyone, and it’s not meant to be. It’s for the person who has tried every other synth and still feels something missing. It’s for the person who wants to own a piece of synth history before it even ships. If that’s you, and you have the patience of a saint and the bank account of a minor deity, the A10 is calling your name.

I’m going to pour another espresso and stare at my bank account, wondering what I could sell to justify this. Spoiler: it’s not the coffee machine.