Octave V40 SE Integrated Amplifier


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The V 40 SE is a line level integrated amplifier with 2 x 40 W peak output power. He is a further development and direct descendant of the successful V 40 and V 50 amplifier models. His powerful, clear bass fundamentals and his captivating resolution in the high frequencies win much respect.

His unique features lift the V 40 SE into the 21st Century, while his performance earned him the rare “Stereoplay Highlight” (issue 07-2009), a prestigious award bestowed by the German high-end audio magazine Stereoplay.


  • The V 40 SE output stage consists of two power pentodes (Type 6550) for each channel. Due to the BIAS Control and Monitoring System, the use of other pin-compatible output tubes is possible to match the amplifier to personal taste, or to benefit from new or improved tubes.

  • Like all OCTAVE Amps the, V 40 SE is based on the enhanced pentode configuration. This configuration ensures the absolute stability of the amplifier against the unstable impedance of the loudspeaker. Impedance mismatch is without consequence, and the V 40 SE is stable down to a 2 Ohm Load. An important contributor to this stability is the single impedance output transformer.

    The V 40 SE is the perfect amp for speakers with an average efficiency rating.But not only is the low impedance capability an advantage, with his exceptional Signal-to-Noise ratio of –110dB / Full Power he is also an ideal partner for high efficiency loudspeakers.

  • Specifications:

    Power Output: 2 x 40 Watt into 4 Ohm

    Frequency Response:
    20 Hz – 70 kHz @ 40 W -1 / -3 dB
    5 Hz – 70 kHz @ 10 W -0 / -2 dB

    Total Harmonic Distortion: < 0,1% @ 10 Watt into 4 Ohm

    Signal-to-Noise Ratio: -110 dB / 40 W    

    Noise / Ripple: < 300 μV

    Optimum Speaker Impedance: 3 – 16 Ohm

    Minimum Speaker Impedance: 2 Ohm

    No-load current: 28 mA - BIAS low, 34 mA - BIAS high

    Connections: Inputs: 4 x Line Level (Cinch)

    Outputs: 1 x Tape

    Pre-Out and Main-In

    Features: ECO Mode, Bias Adjustment, Power Management


    Push Pull Pentode Circuit

    Negative Grid Voltage adjustable for each tube with 3 turn Precision Regulators,

    Wideband Output Transformers using Silicon steel PMZ Core, single Impedance Output,

    Optimum Load Impedance 3 - 10 Ohm

    Nominal Speaker Impedance, Effieciency greater than 85dB, Amplifier remains stable with

    No Load and Output short circuited

    Weight: 18,6 kg

    Standard Accessory: Power Cord, 3 mm Screwdriver, IR-Remote Control              

    Main Fuse: 230/240 V mains: 2,5 A slow-blow type H

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