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Octave V40 SE Tube Integrated Amplifier

by Octave
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SKU V40SEBlack
Color: Black

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Octave V40 SE Tube Integrated Amplifier

V 40 SE | The All-rounder

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.

Basic Model V 40 SE Line

Tube Complement 4 x 6550
Design Aluminium silver or Aluminium black
Options Black-Box and Super Black Box


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 V

Optimum Speaker Impedance
3 16 Ohm

Minimum Speaker Impedance
2 Ohm

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


Inputs: 4 x Line Level (Cinch)

Outputs:1 x Tape

Pre-Out and Main-In


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

Power Consumption 350 W
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