Goldmund Telos 2800 Mono Power Amplifier

The Goldmund Telos 2800 is a reference Class A/B monoblock power amplifier designed for high-current control of demanding passive loudspeakers. Each amplifier delivers 450 watts RMS into 8 ohms and 590 watts RMS into 4 ohms, backed by a massive 3200VA toroidal transformer, 109,600µF capacitor bank, 600 damping factor and 110dB dynamic range. Goldmund| The Art of Sound

Built around Goldmund's proprietary Telos amplification technology, the Telos 2800 combines high-bandwidth circuitry, extremely low output impedance, separate high- and low-current stages, extensive mechanical grounding and a heavily constructed aluminum chassis. A stereo system uses one Telos 2800 per loudspeaker, giving each channel its own amplification chassis and power supply. Goldmund| The Art of Sound

450 Watts Into 8 Ohms

Goldmund's current Rev. D specifications rate each Telos 2800 at:

450W RMS into 8Ω at 1% THD
590W RMS into 4Ω at 1% THD

Maximum unloaded output before clipping is specified at 170V peak-to-peak at 1% THD. Goldmund| The Art of Sound

Because the Telos 2800 is a monoblock, those figures apply to each amplifier individually. A conventional two-channel system therefore uses a matched pair, providing a dedicated amplifier and power supply for the left and right loudspeakers.

Goldmund Telos Class A/B Technology

At the center of the Telos 2800 is Goldmund's proprietary Telos Class A/B amplification architecture.

Goldmund approaches amplifier design around what it calls speaker control. The circuit is engineered for extremely low output impedance, high bandwidth and linear operation through the individual amplification stages. High-current output circuitry and lower-current input stages are separated to reduce unwanted interaction and feedback. Goldmund| The Art of Sound

The objective is not simply to make the amplifier powerful. It is to maintain precise control over the loudspeaker's moving elements while minimizing harmonic distortion, intermodulation distortion and timing errors.

Damping Factor of 600

The Telos 2800 has a specified damping factor of 600 at 1kHz into 8 ohms. Goldmund| The Art of Sound

This specification directly reflects Goldmund's emphasis on driver control. A loudspeaker driver continues to generate mechanical and electrical energy as it moves; an amplifier with very low output impedance can exert greater control over that movement.

Goldmund specifically emphasizes this behavior at low frequencies, where large woofer excursions can produce overshoot and poorly controlled bass. Telos technology is designed to reduce that behavior while preserving low-level microdynamics. Goldmund| The Art of Sound

Massive 3200VA Power Transformer

Each Telos 2800 contains a 3200VA toroidal power transformer.

This is not 3200VA shared between a stereo pair—it is the transformer capacity inside each monoblock. Goldmund| The Art of Sound

For a stereo installation, the pair therefore places two completely independent 3200VA supplies behind the loudspeakers.

Goldmund redesigned the Telos 2800 power supply relative to its Telos 2500 NextGen predecessor, with the objective of increasing efficiency, available output and stored energy while improving the amplifier's response to rapid changes in musical demand. Goldmund| The Art of Sound

109,600µF Capacitor Bank per Amplifier

The power transformer feeds an enormous 109,600µF capacitor bank in each Telos 2800. Goldmund| The Art of Sound

Energy storage matters when a loudspeaker demands substantial current for a short transient. The amplifier needs to move rapidly from reproducing small musical information to delivering high output without the supply becoming the limiting factor.

The redesigned power supply and custom capacitor banks are intended to provide the energy reserve required for those changes without compression or saturation. Goldmund| The Art of Sound

110dB Dynamic Range

Goldmund specifies a 110dB dynamic range, measured with a flat 22kHz measurement bandwidth using true RMS methodology with the amplifier unloaded. Goldmund| The Art of Sound

That capability complements the amplifier's high output power. A reference amplifier needs to resolve extremely small signals as convincingly as it reproduces large dynamic peaks.

Goldmund specifically positions the Telos architecture around maintaining transparency from the first watt through high output levels rather than requiring elevated playback levels to reveal detail. Goldmund| The Art of Sound

Less Than 3µV Output Noise

Output noise is specified at:

<3µV from 20Hz–20kHz

with the analog input terminated by RCA shorting caps and the amplifier unloaded. Goldmund| The Art of Sound

Goldmund also publishes:

THD+N: <0.05% from 20Hz–20kHz at 30Vrms output
SMPTE IMD: <0.05% unloaded. Goldmund| The Art of Sound

These measurements reinforce the design objective of combining very high available power with a sufficiently low noise floor for highly resolving reference loudspeakers.

35dB Gain

Amplifier gain is specified at 35dB. Maximum analog input level before clipping is 1Vrms. Goldmund| The Art of Sound

These specifications should be considered when matching the Telos 2800 with a reference preamplifier because the gain structure of the entire system affects usable volume range, noise and available output.

The natural Goldmund pairing would be one of the company's Mimesis preamplifiers, although the Telos 2800 can also be integrated into reference systems using compatible electronics from other manufacturers.

Balanced XLR & Unbalanced RCA Inputs

Each monoblock provides both:

1 × balanced XLR analog input
1 × unbalanced RCA analog input

This allows the Telos 2800 to integrate with balanced or single-ended preamplifier architectures. Goldmund| The Art of Sound

For longer interconnect runs or systems where the preamplifier provides a fully balanced output, the XLR connection provides the appropriate interface without requiring adapters or conversion.

Digital Input & Output

The Telos 2800 also includes RCA digital input and output connections, an unusual capability for a reference power amplifier.

Goldmund specifies a maximum digital input level of -6dBFS before clipping. Goldmund| The Art of Sound

The digital interface allows the amplifier to participate directly in Goldmund's broader digital system architecture while conventional analog RCA and XLR inputs remain available for traditional preamplifier-based systems.

Goldmund Speaker 4B Connection

Speaker connectivity includes:

2 × heavy-duty output binding posts — positive and negative
1 × Goldmund Speaker 4B connector

The amplifier also includes a dedicated ground-lift switch, AC earth binding post and RS232 command connection. Goldmund| The Art of Sound

The combination supports both conventional high-end loudspeaker connections and integration into a complete Goldmund system.

Mechanical Grounding

The Telos 2800 incorporates Goldmund's Mechanical Grounding technology.

Precision Conic Feet create a controlled mechanical path intended to evacuate unwanted vibration from the amplifier into its supporting structure instead of allowing mechanical energy to accumulate within the chassis. Goldmund| The Art of Sound

Goldmund treats this mechanical behavior as part of amplifier engineering alongside power-supply design, electromagnetic shielding and thermal management.

Massive Aluminum Chassis

The Telos 2800 is constructed around an exceptionally substantial precision-machined aluminum enclosure.

Goldmund specifies 10–12 mm thick aluminum chassis panels and a 30 mm thick radiator that functions as a large passive heat sink. This allows the amplifier to dissipate heat silently without relying on active fan cooling. Goldmund| The Art of Sound

The solid structure also provides electromagnetic shielding, while resin-coated transformers are used to reduce mechanical and electrical vibration.

Each amplifier weighs 59 kg / approximately 130 lb. Goldmund| The Art of Sound

A stereo pair therefore represents roughly 260 lb of amplification alone before flight cases, cabling or supporting equipment.

Handcrafted in Switzerland

Goldmund designs, engineers and hand-assembles the Telos 2800 in Switzerland.

According to Goldmund, internal components are individually tested and each completed amplifier undergoes final testing before release. The company also uses custom-engineered electronic and mechanical components throughout the design. Goldmund| The Art of Sound

For a component at this level, that construction and testing process is worth retaining in The Grid listing because it reinforces the distinction between Telos and mass-produced high-power amplification.

Successor to the Telos 2500 NextGen

The Telos 2800 replaces and significantly advances the Telos 2500 NextGen.

The previous Telos 2500 NextGen delivered 365 watts RMS into 8 ohms, while the current Telos 2800 increases that figure to 450 watts and adds an extensively redesigned power supply with greater energy reserves. Goldmund| The Art of Sound

The increase in rated output is significant, but the larger engineering change is the revised power-supply architecture designed to improve transient delivery and dynamic behavior.

Goldmund Telos 2800 Technical Specifications

These are the figures I would use on Shopify because Goldmund's current Rev. D specification sheet and Rev. D manual agree on the key performance data. Goldmund| The Art of Sound

Built for Reference Passive Loudspeakers

The combination of 450 watts into 8 ohms, 590 watts into 4 ohms, a 600 damping factor and 109,600µF of energy storage per channel makes the Telos 2800 especially relevant for large passive loudspeakers where amplifier control can materially affect bass response, transient behavior and dynamic performance.

Goldmund itself demonstrated the Telos 2800 at AXPONA 2025 with Marten passive loudspeakers, the Mimesis Signature preamplifier and Eidos Streamer—an excellent example of how the amplifier can be used at the center of a reference separates system. Goldmund| The Art of Sound

Goldmund Telos 2800 at The Grid HiFi

The Goldmund Telos 2800 is the kind of amplifier that should be selected as part of a complete reference system rather than judged on wattage alone. Loudspeaker impedance, sensitivity, room size, preamplifier gain, source components, power delivery and system cabling all influence the final result.

The Grid HiFi can build the complete system around a pair of Telos 2800 monoblocks, including Goldmund Mimesis preamplification, reference digital and analog sources, Marten and other world-class loudspeakers, cabling, power and equipment support, with system matching based on the room and listening priorities.

Considering the Goldmund Telos 2800? Call The Grid HiFi at (713) 218-8120 to arrange a private audition and build a complete reference system around it.