Bow Technologies Wizard II/Walrus/Warlock/Wand

R140,000.00 R62,000.00

WALRUS

High resolution dual-mono power amplifier

After bringing High End credibility to the humble ‘integrated amplifier’ with the pioneering ZZ-One and Wazoo, BOW Technologies now applies its acclaimed engineering and industrial design skills to the creation of an innovative high resolution preamplifier/power amplifier combination.

The Warlock and the Walrus offer all the advantages of BOW’s unique system integration, while maintaining the flexibility of separate components.

Simplicity and purity of concept define the high-resolution dual-mono Walrus power amplifier, proudly hand-crafted in Denmark with precision engineered mechanical parts and electronic components selected for their fine sonic characteristics.

Employing minimal current feedback, the Walrus is based on a single voltage-amplification stage. The JFET/BJT cascode input stage, which operates at a high supply voltage, is loaded by a current mirror. The driver circuit is a single high-biased MOSFET. The output stage consists of two complementary pairs of high-power, ultra fast Toshiba MOSFETs.

The Walrus power supply employs 4 toroidal transformers, two for each channel, to ensure maximum speed and separation. Total transformer capacity is in excess of 1400 VA.

The Walrus offers unique connectivity options with balanced and single-ended inputs, two pairs of heavy-duty WBT loudspeaker terminals and single-ended and balanced throughputs, for daisy-chaining the preamplifier signal to additional amplifiers.

WARLOCK

igh resolution dual-mono preamplifier

After bringing High End credibility to the humble ‘integrated amplifier’ with the pioneering ZZ-One and Wazoo, BOW Technologies now applies its acclaimed engineering and industrial design skills to the creation of an innovative high resolution preamplifier/power amplifier combination.

The Warlock and the Walrus offer all the advantages of BOW’s unique system integration, while maintaining the flexibility of separate components.

Simplicity and purity of concept define the high-resolution Warlock preamplifier, proudly hand-crafted in Denmark with precision engineered mechanical parts and electronic components selected for their fine sonic characteristics.

To ensure a short, pristine signal path, no relays are used in the Warlock preamplifier.

The Warlock is essential a scaled down Class A version of the BOW Technologies Walrus power amplifier with 4 line-level inputs (balanced or single-ended), an additional single-ended input, a single-ended Tape Out and 2 Pre Out (balanced or single-ended).

Dual preamplifier outputs provide the user access to the performance enhancement of bi-amplification or the convenience of multi-room sound distribution.

By employing a high performance motorized ALPS volume potentiometer based on a passive variable resistor coupled directly to chassis ground, the Warlock keeps this critical component outside the audio signal path for exceptional sonic purity and integrity.

The Warlock offers direct volume adjustment from the listening position via the distinctive Wand remote control (optional) which also operates the matching BOW Technologies Wizard CD player.

Remote input selection is not available, as this would place nemerous relays in the signal path.

From spring 2004 the Warlock preamplifier comes with a built-in phono-stage (MM sensitivity) which should prove good news for all vinyl lovers.

Discerning listeners will be able to fully appreciate the sublime audio quality of the BOW Technologies Warlock and Walrus amplification system.

WIZARD II

Wizard 2, Single-chassis CD Player

Working to the exceptional standard set by the WAZOO inspired the BOW Technologies engineering team to rethink key areas of CD player design. The result is the Wizard single-chassis CD player.
The striking aluminum surfaces conceal innovative digital technology, advanced mechanical engineering and the most sophisticated analog circuit topology.

Carefully crafted by hand in Denmark, the Wizard employs only precision engineered mechanical parts and components specifically selected for their electrical performance, long-term thermal stability and audiophile-grade sound quality.
BOW Technologies’ assembly procedures are based on techniques used in the manufacture of the most critical medical and military equipment. This time-consuming perfectionist approach to design and manufacture ensure you the best in musical satisfaction and lasting value.

The heart of the Wizard

Digital data are read by e heavily modified, die-cast Philips CDM12 Pro CD transport mechanism stripped of all sonically degrading capacitors. By eliminating capacitors from the entire signal path, the Wizard takes a major step forward in terms of open, richly detailed sound reproduction.

Implementation of the Inter IC-Sound (I squared S) transfer bus, which effectively isolates audio data, word clock and bit clock, virtually eliminates the major source of jitter in CD playback, for a refreshingly clear and smooth sound quality that will have you rediscovering the joys of your music collection for hours at a time.
To further reduce undesirable interaction between transport, digital circuitry and microprocessor circuitry, the Wizard employs 7 separate regulated power supplies for effective electrical isolation.

The Wizard is a unique open well construction, neatly eliminating static build-up and the inherent instability and added cost og mechanisms such as front-loading drawers. A specially developed and finely balanced self-centering disc stabilizer ensures ultra-stable rotation. A lens cover with leather padding is included to protect the laser lens when the player is not in use.

For the ultimate in system flexibility, the Wizard is fitted with single-ended phono and balanced XLR analog outputs and three digital outputs: 75 Ohm BNC, 75 Ohm phono and 110 Ohm balanced AES/EBU.

The Wizard is a sound investment in every sense of the word. Its modular mainframe construction lends itself readily to upgrades and ongoing design improvements. Today, the Continous Calibration Bitstream D/A converter, found in the original Wizard player, has been superceded by a 24 bit D/A converter with 192 kHz oversampling. This new improved version is designated Wizard 2. Upgrade to Wizard 2 performance is possible on all original Wizards.

The Wizard 2 comes with a plastic remote control, but a more elaborate aluminum remote control, designated the WAND, is also available. In addition to CD commands, it incorporates volume control for the BOW Technologies Warlock preamplifier and the WAZOO/WAZOO XL integrated amplifiers.

Description

WARLOCK Technical specifications

Bandwidth: 2 Hz – 200 kHz
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Input sesitivity: 0,35 V
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Input impedance: 50 kOhm
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Output: 2 V at 350 mV input
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Output impedance: Less than 10 Ohm
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Hum and noise: -100 dB
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Total harmonic distortion: Less than 0,2
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Channel balance: Within 0,3 dB
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Inputs: 5 x rca singleended, 4 x XLR balanced
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Outputs 2 X rca sigleended, 2 X XLR balanced
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Power supply: 2 x toroidals
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Power consumption: 11 watt
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Dimentions (WxHxD): 434 x 410 x 110 mm (WxDxH)
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Weight: 12 Kg. net
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Wizard Technical specifications

Frequency response: 5Hz – 20kHz 0,3dB
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Signal to noise ratio: Better than 90dB
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THD: 0.002 @1kHz, 0.03 10Hz – 20kHz
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Dynamic range: Better than 96 dB
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Phase linearity: Better than 0,5*
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Channel separation: Better than 90 dB, 1kHz
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Wow and flutter: Unmeasurable
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Analog output: 2,5 V RMS
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Digital outputs: 0,5V p-p, 75 Ohm (BNC and RCA sockets) 2.6V p-p, 110Ohm (XLR)
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D/A converter: Wolfson 24-bit, 192kHz
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CD mechanism: Philips CDM 12 Pro (modified)
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Power consumption: 35W max.
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Dimensions: 434 x 110 x 360mm (W x H x D)
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Weight: 11 Kg net, 14 Kg shipping

Walrus Technical specifications

Power output: 150 watts RMS 8 Ohm, 300 watts RMS 4 Ohm
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Power bandwidth (-3dB): 2 Hz – 300 kHz
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Input sesitivity: 2 V
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Input impedance: 50 kOhm
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Output impedance: Less than 0,1 Ohm
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Hum and noise (A-weighted): -100 dB
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Total harmonic distortion: Typicaly 0,1
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Overall negative feedback: 20 dB
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Channal balance: within 0,1 dB
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Inputs: 1 pair rca single-ended, 1 pair XLR balanced
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Output/ throughputs: 1 pair rca single-ended, 1 pair XLR balanced
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Loudspeakers outputs: 2 pairs heavy duty WBT
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Power supply: 4 x 350 VA toroidals
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Power consumption: Maximum 1400 VA, 110 VA at idling
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Dimentions (WxHxD): 434 x 390 x 160 mm (WxDxH)
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Weight: 33 Kg. net