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Graham Slee Solo Ultra Linear Diamond Edition Headphone Amplifier

 

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Found it cheaper? Click here. SKU: 4362
Ex VAT: 550
£660.00

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Condition:Brand new in original retail packaging

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Features

Warranty length 2 Years
Brand Graham Slee

Tech Specs

Headphone impedance range: 8 to 2,000 Ohms / 16 to 600 Ohms preferred
Power output: 32 Ohms: 140mW/channel; 600 Ohms: 30mW/channel
Input sensitivity (for specified power output into 32 Ohms): 511mV rms
Input impedance: 37k Ohms at max volume; 50k Ohms at min volume
Distortion: 10Hz-20kHz: better than 0.04%; 10Hz-1kHz: better than 0.02%
Frequency response (±0,-3dB) 10Hz - 35kHz
Output noise: (22Hz-22kHz, quasi-peak/un-weighted) -78dB
Channel balance: better than 1dB
Crosstalk: Left to Right -56dB; Input to Input -68dB
Input selector: -38dB max vol with 2V rms input (ref: 1kHz and 10kHz)
Output Stage: Bipolar class AB
Supply voltage: 24V DC unipolar
Size: (approx.) W: 107 x H: 50 x D: 185 (mm) inc. controls

Product Description

The Graham Slee Solo Ultra Linear Diamond Edition is Graham Slee's flagship headphone amplifier and boy does it let music flow, one of the finest headphones listening partners we've ever heard. When the band throws everything into the mix the Solo Ultra Linear headphone amplifier doesn't lose the plot.

At last, this is a headphone amp that does away with the sharp glaring edginess so common in today's other models. It replaces this with all the music - all its scale, power and emotion. However one chooses to define "all the music", the Solo Ultra Linear headphone amplifier does it that way!

Design

So what's the Solo Ultra Linear secret? Well, there are many, but one is that distortion remains consistently low throughout the audio spectrum. Why? Because its bandwidth is exceptionally wide before the application of "negative feedback". Solid state headphone amps use negative feedback as a fix for distortion as well as noise but also to widen bandwidth. However, all this succeeds in doing is adding "glare". The highs also affect sound at bass and mid frequencies because leading edge of a note is fast - if the highs are distorted much of the fine detailing in the bass and mid frequencies is lost. By improving on distortion linearly throughout the entire audio band the sound stage comes alive as you've never had before.

Another one of the Solo Ultra Linear secrets is greater input linearity: usually a solid state amp cannot take much input signal before it is overdriven when it distorts badly and copious amounts of negative feedback have to be applied to correct it. What you end up with is restructured music that doesn't quite hit the spot. Some claim "no negative feedback" but if that were the case all you'd hear is distortion!

Like most headphone amps, the Ultra Linear is basically a pair of transistor assisted op-amps, but these feature one of the best output stages ever designed. As authored by J L Linsley Hood, it remains the most musical of output stages and is class-A. To these we add our proprietary open-loop bandwidth widening technique and the difference is staggering. Read more about Linear technology.

30 Day Money Back Guarantee

Rather than demo in a shop reference system which could be somewhat misleading with regard to how this item will perform in your own system, this item includes a 30 day money back guarantee, allowing you to demo it at home for upto 30 days in your own system. If you are unsatisfied, you can return it to us for a refund. (terms and conditions).

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