Description
The V 70 maintains the success story of OCTAVE tube amplifiers. Both the styling and the circuit design are based on the V 40, which is already a well-established favourite with both hi-fi enthusiasts and hi-fi magazine reviewers. The V 40 has received a string of awards. It was awarded a Stereoplay "Highlight" and voted the best integrated tube amplifier in AUDIO maga-zine's "Goldenes Ohr 2003" readers' poll and in Stereoplay magazine's "Highlights 2002" readers' poll.
With the V 70, Octave has proven once again that a tried and tested design can always be enhanced through the careful application of engineering flair and the use of selected components from specialist manufacturers. The V 70 features more powerful output pentodes than the basic model, with a choice of KT 88 or 6550 tubes. The generously dimensioned output transformers, which are manufactured in-house, contribute substantially to the uprated 2 x 70 W power output. These employ a unique and extremely complex winding technique designed to achieve the perfect symmetry that is the aim of every push-pull design. Thanks to this technique, the well-known problems of the push-pull principle are now a thing of the past. Unmusical distortion in the upper frequency ranges has been greatly reduced and the usable bandwidth extended to well over 80 kHz.
The development of this amplifier also focussed on making the power supply section as perfect as possi-ble. The power transformer (approx. 700 VA) is nearly twice the size of the one in the V 40. The latest high performance electrolytics from Epcos (formerly Siemens) together with higher performance, low-resistance MOS-FETs in the high voltage tube stabilization circuitry ensure exceptionally noise-free
and stable current delivery.
Input switching is via gold-plated double contact relays designed specifically for high reliability operation with low level signals. There is also provision for connecting an outboard OCTAVE Black Box – an option that guarantees unsinkable stability and dynamics, even when driving very low efficiency loudspeakers.
