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Graham Slee Voyager portable headphone amplifier
Graham Slee Voyager portable headphone amplifier

Graham Slee

Voyager portable headphone amplifier

The pocket sized Voyager portable headphone amplifier makes music on the move a whole new experience — capable of projecting an airy musical outside-your-head performance using good headphones, and ...

Brand: Graham Slee
Product Type:  
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£192.52

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The pocket sized Voyager portable headphone amplifier makes music on the move a whole new experience — capable of projecting an airy musical outside-your-head performance using good headphones, and with a source that's capable of it.

Battery life 50 hours continuous play, 2-3 weeks average usage
Output 12mW rms into 32 Ohms, 10mW rms into 600 Ohms
Frequency Response Flat: 13Hz to 34.5 kHz (-1dB), 5.5Hz to 69 kHz (-3dB)
Contour +9dB at 45Hz and 20 kHz, Turnover +3dB at 260Hz and 2.85 kHz
Channel Balance 0.5dB*
Hum & Noise -94dB CCIR Q-pk 20Hz-20kHz, better than -100dB "A" curve weighted
Stereo Crosstalk -52dB
Distortion (THD+Noise) at 80Hz: 0.03%, at 1 kHz: 0.03%, at 5.6 kHz: 0.05%, at 16 kHz: 0.13%
Power sources [1] Battery, 9V (MN1604; 6LR61)
  [2] USB via "mini-B" 5VDC (with internal 9VDC analogue voltage conversion)
  [3] Mains adapter, 12-18V AC or DC unregulated (internal rectifier for AC use) (Polarity protection on all)
Weight 180 grams approx. (700 grams with plug top PSU)
Size L. 12.5 W. 6.7 H. 2.8 (cm)

Use it with your iPod, Walkman, MP3 player or any other mobile device having an analogue output - line out or even its headphone socket - and hear the improvement.

The Voyager portable headphone amplifier can even make cheap headphones sound good: its contour switch compensates for the limited tonal range of lightweight street-wear headphones making them sound like real hi-fi headphones. From the moment of your first listen you will never want to travel without it.

Under the hood

Running on a single 9 volt "E-cell", the Voyager portable headphone amplifier drives high impedance headphones as easily as low impedance ones. It has a long battery life: usually lasting a month of average usage at good volume levels - and on occasion 3 months! This is because it uses a low loss battery polarity-protection system leaving more power for your music. When at home or at work it can borrow power from your computer USB port* or be powered from its mains adapter (supplied). Laptop users on the move can also make use of the USB* power facility, thus preserving battery power. Rechargeable 9 volt batteries charged on a separate charger may also be used.

The Voyager portable headphone amplifier uses noiseless DC to DC conversion to increase the 5 volt USB voltage to 9 volts ensuring no loss of level when powered from USB.

Stereo input and headphone output are on high quality Jalco 3.5mm jacks. The volume control is a high quality all metal Alps miniature "velvet" potentiometer of similar construction to the Alps AC27/30 often found on really expensive amplifiers, but a whole lot smaller. Switches are also by Alps - known for their precision. A clear low noise red LED warns you when the Voyager is switched on, helping you to conserve battery power.

The "no-bling" Voyager portable headphone amplifier case is made of hard-wearing precision machined textured ABS, featuring a black and silver anodised aluminium fascia plate carrying the necessary functional markings. A clip on cover securely holds the battery within its durable foam lining.

Each Voyager portable headphone amplifier is individually hand built in Britain by time served engineers and fully specification tested to ensure perfect operation. The circuit uses conventional through-hole non-surface mount components to help achieve its excellent and airy sound quality making it unique amongst miniature headphone amplifiers.

The Voyager is iMod compatible - it does not require DC blocking capacitors for a 3.3V powered iDevice - just connect and enjoy!