RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
This is a buyer’s market at this ask: US$13,999 sits above the US$8,444 median and above the US$17,114 75th percentile? No — it’s above the median but still below the 75th percentile, so I’d call it ambitious but not outlandish for a pair of these. It’s roughly a US$5,555 premium to the median, so you’re paying for strong-condition confidence or convenience rather than a clear bargain.
That said, these are respected monoblocks for buyers who want tube sweetness with real drive, scale, and dual-mono separation; a clean pair can make a serious high-end system feel both more effortless and more dimensional. The upside is strongest if the amps are genuinely well cared for, fully matched, and include the right accessories or original packaging; if so, the premium is easier to justify.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
# AGD Productions
AGD Productions, Inc. is a Los Angeles-based high-end audio manufacturer founded by engineer and designer Alberto Guerra. Operating from Palos Verdes Estates, California, the company has established itself as a pioneer in GaN (Gallium Nitride) power semiconductor technology applied to Class-D amplification. While exact founding details are not definitively documented in available sources, AGD has built its reputation over recent years through innovative product development and handcrafted manufacturing in the USA.
The brand specializes exclusively in power amplifiers, positioning itself at the forefront of GaN-based amplifier design. AGD's product lineup includes the iconic GaNTube series, the Gran Vivace monoblocks, the Audion, the compact FORTE, and the SOLO integrated amplifier, alongside their recent all-in-one ALLEGRO system. Each component reflects the company's philosophy of merging technical precision with musical transparency and aesthetic refinement. The amplifiers range from approximately $1,500 to $27,400, reflecting their high-end positioning.
AGD Productions occupies a distinctly premium niche within the high-end audio market. The brand appeals to discerning audiophiles seeking cutting-edge amplification technology combined with meticulous engineering and design artistry. Their reputation rests on proprietary GaN power technology, dual-mono architecture, and ultra-low-noise power supplies—technical credentials that resonate strongly with serious collectors and music enthusiasts willing to invest substantially in amplification excellence.
See all AGD Productions listings on RADAR.
