Reviewer:
Srajan Ebaen
Financial interests: click here
Sources: 27" iMac with 5K Retina display, 4GHz quad-core engine with 4.4GHz turbo boost, 3TB Fusion Drive, 16GB SDRAM, OSX Yosemite, PureMusic 3.01, Tidal & Qobuz lossless streaming, COS Engineering D1 & H1, AURALiC Vega, Aqua Hifi Formula, Fore Audio DAISy 1, Apple iPod Classic 160GB (AIFF), Astell& Kern AK100 modified by Red Wine Audio, Cambridge Audio iD100, Pro-Ject Dock Box S Digital, Pure i20, Questyle QP1R
Preamplifier: Nagra Jazz, Vinnie Rossi LIO with AVC module, COS Engineering D1, Wyred4Sound STP-SE Stage 2
Power & integrated amplifiers: Pass Labs XA30.8; FirstWatt SIT1, F5, F6, F7; Crayon Audio CFA-1.2; Goldmund Job 225; ; Aura Note Premier; Wyred4Sound mINT; Nord Acoustics One SE UP NC500MB; Linnenberg Audio Adagio [on loan]
Loudspeakers: Albedo Audio Aptica; EnigmAcoustics Mythology 1; soundkaos Wave 40; Boenicke Audio W5se; Zu Audio Druid V & Submission; German Physiks HRS-120; Eversound Essence
Cables: Complete loom of Zu Event; KingRex uArt, Zu and LightHarmonic LightSpeed double-header USB cables; Tombo Trøn S/PDIF; van den Hul AES/EBU; AudioQuest Diamond glass-fibre Toslink; Arkana Research XLR/RCA and speaker cables [on loan]; Sablon Audio Petit Corona power cords [on loan], Black Cat Cable Lupo; Ocellia OCC Silver
Power delivery: Vibex Granada/Alhambra on all components, 5m cords to amp/s + sub
Equipment rack: Artesania Audio Exoteryc double-wide 3-tier with optional glass shelves, Exoteryc Krion and glass amp stands [on loan]
Sundry accessories: Acoustic System resonators
Room: Rectangular 5.5 x 15m open floor plan with two-storey gabled ceiling, wood-sleeved steel trusses and stone-over-concrete flooring
Review component retail: CHF25'000
A 300wpc integrated amplifier? "Class D" you shrug off. "One more ICEpower, perhaps nCore. Yawn. Next." Hola, hombre. Steady. Whilst at 215/280wpc into 8/4Ω more powerful than the Job INT we took a look at earlier, the new Goldmund Telos 590 NextGen is still a wide-bandwidth DC-coupled class AB design. Aside from five analog inputs, there's a new DAC with 24/384PCM/DSD128 USB, coax and Toslink; plus remote control via wand or app for iPad/iPhone. That makes it more potent too than the outgoing Telos 390 which it replaces at right; and does a +1 for input socketry on. But first, back to the beginning; or end as it were. What about that NextGen suffix?


Goldmund had tasked themselves to update their most powerful amplifier ever: the hulking limited-edition 651lbs 1-metre Telos 5000. As the press release explains, the resultant Telos 5500 exceeded their own expectations. Now the decision was made to migrate the same tech over to their best-selling other models both in their preamp and power amp portfolios. Thus the Telos 1000 became the Telos 1000 NextGen, the Telos 2500 and Mimesis 22 the equivalent NextGens. Rather than carry on the previous name with just the new suffix, the numbering of the integrated grew to reflect its power increase. It also grew in physical stature. Then it added visible heat sinks. Of course the gold-plated decal remains. With gold in the company name, some actual aurum belongs. Goldmund are a self-declared luxury house after all. The Telos range is their finest, named after the Greek τέλος for goal. As the final tier above the Metis range, it renders this their statement integrated; their Gryphon Diablo 300; their take on the world's best. Le patron. So bring on the sparkle. Peel off that protective blue skin over the 24-carat plaque. Serve some bubbly. A votre santé!

Goldmund at Munich Highend 2017. Their Rodolphe Boulanger next to a Telos 5500 for size reference.


Being from Geneva—thus at the very heart of the Swiss watch industry's infrastructure of precision subcontractors—the 590's metal work goes all the way to the extra-smooth silky finish. Though powerful, playing to white-cross conservatism on the hood means sleek understated cosmetics. For hidden machismo under the hood, we'll look at the innards on the next page. Whilst the Job INT digitized its analog input to apply digital volume control, the 590's positioning and plethora of analog inputs called for analog volume, hence no DSP-based attenuation or Leonardo 2 time-based correction logarithm. Relative to my other questions, Anne-Karine Agius, Goldmund's global marketing manager in Monaco, explained that they don't calculate 2Ω power, output impedance or slew rate.


In general, Goldmund don't go for a full tech breakdown. They prefer compelling dealer demos to make the case instead. In core markets like South Korea, West Palm Beach and NYC for example, Goldmund actually prefer to run their very own stores. With fully active speakers, in-wall solutions and surround sound, they can demonstrate ambitious home theatre, traditional large-room hifi in stereo, even WiFi setups, petite desk-top systems and headfi. Servicing mail-order clients is reserved exclusively for their entry-level Job Electronics brand.


Returning to the Telos 590 NextGen, to drive your own even inefficient passive speakers in a power-hungry large space, one component is all it takes now to harness Goldmund's very latest NextGen gain tech. With an enviable 40 years of R&D preceding it, one expects something very refined; like <0.08% THD+N at 30Vrms out; <0.02% unloaded IMD before clipping; <10µV noise at full bandwidth; dynamic range >100dB. That brute low-impedance power isn't the game we already knew from the 4Ω figure's mere 30% increase over 8Ω and no 2Ω figure. This is not a Krellian power-doubling beast though max consumption is 750 watts. At 35dB, gain is higher than the industry-standard 26dB but then this is an integrated, not just power amplifier.

Goldmund's presentation on how bandwidth relates to speed as illustrated with consecutively superior square-wave performance.