Graham Slee Voyager reviews

2 customer reviews
Photo of Graham Slee Voyager Audio Accessory
  • Photo of Graham Slee Voyager Audio Accessory
  • Photo of Graham Slee Voyager Audio Accessory
  • Photo of Graham Slee Voyager Audio Accessory

This audio accessory is a good all rounder.

£192 at 1 retailer out of 423 retailers checked

8.5 out of 10 based on 2 reviews.
12.5cm deep, 6.7cm wide See full product description

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Product Features

Depth in cm 12.5
Width in cm 6.7
Height in cm 2.8
Weight (g) 180

Also known as: Graham Slee The Voyager


Manufacturer's Description

Voyager Portable Headphone Amplifier

Inherent headphone protection from damaging DC currents comes as standard with every Graham Slee headphone amplifier.

Gives true music lovers the sound they expect – it allows you to hear the emotion and feeling in the recording rather than just the mechanics of bass and treble (boom and tizz is so false); presence, not to be confused with “the warm glow”; stereo width in which we don’t mean fat stereo which is smear!

Those who do not comprehend emotion and feeling will either find themselves in a learning curve where compelling lyrics start to jump out of the recording and songs start to take on the meaning the composer meant, or they will simply not “get it”. This product is not intended to give the quick “fix” of an AB demo. It is not for you if you judge music mechanically or by the bling looks of the enclosure.

The shirt/blouse 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, 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.

Running on a single 9 volt “E-cell”, the Voyager portable headphone amplifier 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.


Dimensions: L. 12.5 W. 6.7 H. 2.8 (cm)

Weight: 180 grams approx. (700 grams with plug top PSU)

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)

Product Retailer Price Total price Buy now
Graham Slee The Voyager Portable Headphone Amplifier
Graham Slee The Voyager Portable Headphone Amplifier £192 delivery cost may apply Go

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  • £192 at 1 retailer out of 423 retailers checked

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