Danish high-end house Gryphon rarely builds anything that could be filed under “just an amplifier.” The Hyperion is a textbook example of engineering ambition crossing into the realm of brute-force art — a stereo power amplifier running in pure Class A, carrying forward the philosophy of the cult Mephisto but with a far more aggressive set of internals.
The headline feat is what’s not there: global feedback. Gryphon has gone for zero global negative feedback, and that’s no marketing slogan. Ditching the correction loop demands flawless linearity at every gain stage, because any circuit flaw shows up instantly with nowhere to hide. It’s an approach only a handful of designers dare attempt.
To extract maximum performance from Class A without leaning on feedback, Gryphon didn’t skimp on output devices. The stereo chassis packs 40 transistors; step up to a pair of monoblocks and you’re looking at 80 transistors. That small army exists for one reason — to keep an iron grip on any loudspeaker load, including the most awkward, low-impedance offenders.
Then there’s the power supply. Total filter capacitance reaches a staggering 500000 µF — an enormous energy reservoir that stops the amp gasping on dynamic peaks and keeps bass tight and authoritative. For Class A, with its voracious appetite and relentless heat, a beefy, well-damped supply is the foundation everything else rests on.
One curious omission: Gryphon hasn’t officially published an output power figure. That’s very much in character for the brand, which has always emphasized current delivery and speaker control over a number on a spec sheet. Judging by the sheer scale of the power section, the Hyperion is unlikely to run short of headroom.
- Type: Class A stereo power amplifier
- Feedback: zero global negative feedback
- Transistors: 40 on the chassis, 80 per monoblock pair
- Filter capacitance: 500000 µF
- Price: US$80,200 (stereo version)
At US$80,200 for the stereo version, the Hyperion firmly belongs in the territory of those building a top-flight system without a glance at the budget. The amplifier is scheduled to ship in late summer 2026.
The Hyperion reads like a natural continuation of Gryphon’s power lineup: uncompromising Class A, no shortcuts in either the supply or the circuit topology, and the brand’s signature heft — in grams as much as in sonic authority. If the Mephisto once set the bar, the Hyperion has clearly arrived to raise it.
