Classe DELTAMONO Mono Power Amplifier

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Classe DELTAMONO Mono Power Amplifier

Delta MONO embodies exquisite, controlled, unending power.

A perfectly detailed enclosure cradles a highly innovative blend of technologies and hand-selected components which deliver effortless, refined sound.

Delta MONO is crafted for exceptional performance and durability – every detail superbly refined. The first 35W of power are pure Class A, and with over 300W per unit total (1,000W @ 2Ω) at its command, Delta MONO will confidently control any loudspeaker.

Delta MONO delivers the utmost clarity in everything you hear. Every detail communicates natural, authoritative sound. An expansive dynamic range with infinitesimal noise delivers unsurpassed fidelity to the musical source. Start listening.

Delta MONO continues Classé’s reputation for monumental design. The amplifier creates an immediate presence in any room or installation through its unique form and superb materials. The illuminated VU meter beautifully communicates output with elegance and detail. This is an amplifier that looks as iconic as it sounds.

Thanks to the unique ICTunnel™ cooling technology, Delta MONO is stackable and rackable in a way no conventionally-cooled amplifier can match. Internal temperature is continuously monitored and controlled, ensuring performance in any configuration. Combined with Delta MONO’s construction, ICTunnel supports a lifetime of unrivalled amplification performance.

Frequency response: 1Hz – 650kHz (-3dB, 50Ω source impedance)
Harmonic Distortion: <0.0016% at 1kHz,
, <0.0018% at 10kHz
<0.0028% at 20kHz (measurement bandwidth: 500kHz, 25Vrms in 4Ω or 8 Ω)
Peak Output Voltage: 148Vp-p into 8Ω
156Vp-p no load
Input Impedance: 82kΩ (at 1kHz, BAL / SE)
Voltage gain: 29 dB (at 1kHz, BAL / SE)
Intermodulation Distortion: <0.001% (SMPTE 4:1) (8Ω or 4Ω, BAL / SE)
Slew Rate: >72V / μs
Signal to Noise Ratio: 117dB (119.5dBA) (A wtd in parenthesis) (22kHz BW)
Output Impedance: 0.01Ω (100Hz), 0.011Ω (1kHz)
0.015Ω (10kHz)
Damping Factor: 700 (at 1kHz, ref 8Ω)
Overall Dimensions: Width: 444mm
Depth (excluding connectors): 492mm
Height: 222mm
Net weight : 44.3 kg
Shipping weight: 50.6 kg


  • Up to 35W delivered in pure Class A operation
  • 300W per unit total
  • Massive, high-quality power supply
  • Custom toroidal transformer