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NAT Audio Se2Se GM70 paralleled single ended valve mono blocks. 60W pure class A, Zero global feedback, direct coupled driver stage, NOS 1970 GM70s, PTFE coupling capacitors, will drive electrostatic speakers. Fantastic sound excellent condition, original crates. 78kgs. ExDem.
The NAT Audio Se2Se GM70 is a serious speaker design—GM70 tube amplification in the signal path puts it in the high-end passive/active hybrid category. At £8,738, this listing sits well below your comparable median of £15,553 and sits near the 25th percentile (£7,410), making it genuinely competitive pricing for excellent condition. If this model typically trades in the £12,000–£18,000 range used, you're looking at a meaningful discount, though condition and completeness matter enormously at this tier.
Before committing, verify the tube complement is original and current—replacement GM70s are expensive and sourcing matched pairs matters for symmetry. Check that both channels measure equally and listen for any hum or microphony; ask for photos of the binding posts and internal connections, as oxidation on tube sockets or loose solder joints are common weak points in vintage tube gear. Confirm what's included: original packaging, documentation, and any matched output transformers or crossover components should be present for a speaker at this price point.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
NAT Audio, a boutique high-end audio brand from Serbia, has earned a devoted following among tube enthusiasts for its handcrafted electronics. Emerging in the early 21st century, the company embodies Eastern European precision in vacuum-tube design, with products often hailed as "giant killers" for outperforming far pricier competitors in audiophile forums. Though specifics on its founding year and principals remain elusive in mainstream records, NAT Audio's heritage lies in Serbia's niche tradition of innovative, small-batch amplification.
The brand focuses exclusively on premium tube and hybrid electronics, specializing in single-ended topology and pure Class A circuits that prioritize audio purity. Their lineup features standout amplifiers like the SE2SE 75W/channel 211 SET monoblocks, using rare NOS tubes such as 1948 GE 211s, alongside two-box preamplifiers like the Utopia, and precision phono stages. This emphasis on meticulous, point-to-point wiring and innovative tube implementations sets them apart from mass-produced gear.
Positioned as a niche boutique in the ultra-high-end market, NAT Audio commands respect from discerning buyers seeking emotional, lifelike sound over hype. Far from mid-tier or vintage revivalists, their Serbian-made wonders deliver SET magic at accessible prices, often replacing legendary setups in passionate collections. For the knowledgeable hi-fi buyer, NAT Audio represents uncompromised tradition fused with subtle innovation.
See all NAT Audio listings on RADAR.
