Classe Delta Mono Power Amplifier

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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.

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

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.

Hand-laid circuit boards
6-layer circuit boards provide for shortened signal and power pathways with lowest noise
Fully balanced output stage and balanced circuitry
22 4-pole Mundorf® capacitors
Custom-made Navcom® feet to absorb vibrations
Furutech® rhodium-plated RCA and torque-guard speaker connectors

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  • Specifications

    Frequency Response
    (-3dB, 50Ω source impedance)1Hz – 650kHzContinuous Output Power
    (at 1kHz, 0.1% THD+N)C300W / 8Ω
    600W / 4Ω
    1000W / 2Ω (with AC line held constant)Harmonic Distortion
    (measurement bandwidth:
    500kHz, 25Vrms in 4Ω or 8 Ω)<0.0016% at 1kHz
    <0.0018% at 10kHz
    <0.0028% at 20kHzHarmonic Distortion
    (measurement bandwidth:
    90kHz, 25Vrms in 4Ω or 8 Ω)<0.0005% at 1kHz
    <0.0006% at 10kHz
    <0.0015% at 20kHzPeak Output Voltage
    (nominal AC line)148Vp-p into 8Ω
    156Vp-p no loadInput Impedance
    (at 1kHz, BAL / SE)82kΩVoltage Gain
    (at 1kHz, BAL / SE)29dBIntermodulation Distortion
    (SMPTE 4:1) (8Ω or 4Ω, BAL / SE)<0.001%Intermodulation Distortion
    (CCIF) (8Ω or 4Ω, BAL / SE)<0.002%Signal-to-Noise Ratio
    (A wtd in parenthesis) (22kHz BW)117dB (119.5dBA)Slew Rate72V / μsOutput Impedance0.01Ω (100Hz), 0.011Ω (1kHz),
    0.015Ω (10kHz)Damping Factor
    (at 1kHz, ref 8Ω)700