Description: Solid state mono power amplifier. Output power (IEC60065): 300W into 8 ohms (24.77dBW), 530W into 4 ohms (24.23dBW) at 1% THD. Damping factor: 600 at 1kHz assuming an 8 ohm load. THD+N, unloaded: <0.05%, 20Hz–20kHz at 30V output. Intermodulation distortion (SMPTE), unloaded: <0.05% noisefloor, analog input terminated with RCA shorting caps, unloaded: <3µV, 20Hz–20kHz. Gain: 35dB. Max input level before clipping: Analog input: 1V; digital input: –6dBFS. Max output level before clipping, 1% THD, unloaded: 170V peak–peak. Dynamic range, 22kHz…
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Sidebar 2: Associated Equipment
Analog sources: SME Model 35 turntable; Ortofon Verismo, Lyra Etna λ Lambda phono cartridges.
Digital sources: Innuos ZENith Next-Gen server-streamer, CH Precision C1.2 D/A processor.
Preamplifiers: Pass Laboratories XP-32 (line); Pass Laboratories XP-27 phono.
Power amplifiers: Pass Laboratories XA60.8 monoblocks.
Loudspeakers: Wilson Audio Specialties Alexx V; Marten Mingus Septet.
Cables: Digital: AudioQuest Carbon, Cinnamon, & Coffee USB; CAD USB; Wireworld Platinum Starlight 8 Ethernet. Interconnect: Jorma Statement, AudioQuest…
Sidebar 3: Measurements
I performed a complete set of measurements on one of the two Goldmund Telos 2800 monoblocks sharing serial number T2_LN000023 with my Audio Precision SYS2722 system. I preconditioned the amplifier by operating it at 1/8 power into 8 ohms for 20 minutes. At the end of that time, the top panel's temperature was 89.8°F/32.1°C. The temperature of the hottest section of the heatsink on the rear panel was 108.9°F/42.8°C.
The amplifier preserved absolute polarity, ie, was noninverting, with both the single-ended and balanced inputs. (The XLR jack is wired with pin…
Frederich Nietzsche distinguished between two approaches to culture: The Apollonian, which is characterized by order and rationality, and Dionysian, which is about chaos, intoxication, and vitality. Apollo was the god of Music, Art, Light, and Knowledge, and to Nietzsche, the Apollonian impulse was the main source of beauty. It is characterized by order, clarity, individuation, and measured restraint. To me, Greek sculpture and the paintings of the Great Masters best represent this impulse. It's not just their classical forms—there's a strength to it, a solidity. Also think of the great…