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The Goldmund Telos 2500 is a mono (monoblock) universal power amplifier designed for high‑end audiophile systems, delivering very high output power with extremely wide bandwidth and low distortion. It provides continuous power of 400 W into 8 Ω, 4 Ω, and 2 Ω with dynamic power up to 600 W into 8 Ω, and a specified minimum load impedance of 1 Ω, making it suitable for demanding loudspeakers. Total harmonic distortion is specified at 0.01%, with a frequency response of approximately 1 Hz to 300 kHz (Goldmund’s own literature and major databases also quote 0–300 kHz ±0.1 dB and extension to 800 kHz ±1 dB). The amplifier offers RCA and XLR analog inputs, high signal‑to‑noise ratio (around 130 dB), and is built as a very heavy, mechanically rigid chassis weighing 75 kg. Physical dimensions are given as roughly 460 × 515 × 325 mm (W × D × H) in some manufacturer‑linked documentation, and 460 × 325 × 510 mm in other reputable listings; both sets of figures describe a large, full‑size Goldmund chassis of the same weight and layout. Protection circuits include standard Goldmund implementations for overload and thermal protection, but are not marketed as “digital I/O” or networking features. The original Telos 2500 is a pure analog power amplifier; the Telos 2500 NextGen / NG is a later, distinct model with different specifications: maximum power 365 W into 8 Ω (IEC60065, 1% THD), bandwidth specified 20 Hz–20 kHz ±0.03 dB, THD+N <0.05%, damping factor 600 at 1 kHz / 8 Ω, and RCA/XLR analog inputs plus RS‑232 control, in the same 75 kg chassis. Claims of 1000–1200 W per channel, 0.005% THD, and extensive digital inputs and outputs correspond to non‑Goldmund “reference” products or clone amplifiers, and do not apply to the genuine Goldmund Telos 2500 or Telos 2500 NextGen.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Progression M550's power @ 8ω is 550W against the Telos 2500's 400W, its signal-to-noise 105 dB against 130 dB, its thd 0.015% against 0.010%, and its output impedance 0.1Ω against 10Ω.
The Grandioso M1X's power @ 8ω is 300W against the Telos 2500's 400W, its signal-to-noise 119 dB against 130 dB, its thd 0.006% against 0.010%, and its output impedance 0.1Ω against 10Ω.
The Hercules II's power @ 8ω is 550W against the Telos 2500's 400W, its thd 0.050% against 0.010%, its damping factor >100 against >600, and its output impedance 0.05Ω against 10Ω.
The KSA-i400's signal-to-noise is 117 dB against the Telos 2500's 130 dB and its damping factor >800 against >600. Both share power @ 8ω (400W) and class (A).
McIntosh MC301
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