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Graham Slee Solo Ultra-Linear DE

Rated 4.00 out of 5 based on 1 customer rating
(1)

It might look fairly simple, but this Diamond Edition headphone amplifier sounds like a real gem” HiFi Choice Nov 6th 2016.

₹72,000.00

SHIPPING

-Ships In India
-Free Express Shipping
-COD Unavailable


RETURNS

We do not accept returns for this product.


WARRANTY

Manufacturer’s Warranty

The Solo Ultra-Linear is supplied with our PSU1 outboard power supply.

It lifts the performance of any good music source and quality dynamic headphones.

They are well-known for their great stereo imaging and musicality, and the Ultra-Linear Diamond Edition (DE) will give you effortless dynamics, a powerful but not boomy sound, and a valvey (tubey) smoothness with detailed clarity.

And It’s A Solid-State Headphone Amplifier!

The Solo Ultra-Linear Diamond Edition (ULDE) headphone amplifier replicates tube amplification, but is solid-state to keep it’s performance for all its long life.

We use our proprietary and well-guarded bandwidth extension technique we call Ultra-Linear which replicates this most desirable of tube characteristics.

The Solo ULDE has a completely redesigned output stage and better noise performance than the earlier Solo UL, which means it will drive a much greater range of high performance over-ear dynamic headphones, and be hiss-free when used with in-ear monitors.

Unlike tube amplifiers it works with all common headphone impedances, and its Z-Match impedance ranging volume control takes the place of gain switches, allowing amplifier gain to be fixed so it results in optimum musical performance.

Generous phase and gain margins give it great high-frequency stability under all loading conditions. This coupled with its wide input latitude lets it effortlessly reproduce large musical transients with real clarity.

Excellent power supply filtering and ultra-stable voltage regulation make its power so clean that it depicts the minutest of detail, the nuances – the shades of expression, so your music really communicates with you.

It also results in superb stereo imaging with great separation between performers and instruments, dispensing a believable stereo sound stage.

The Solo ULDE reveals the emotional content of your music and will immerse you in your music without fatigue for hours on end.

Headphone impedance range 8 to 2,000 Ohms / 16 to 600 Ohms preferred
Power output (rms, both channels fully driven at 1% THD) 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 (THD plus noise at 9 o’clock volume control setting (qtr power)) 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) -95dB
Channel balance better than 1dB
Crosstalk Left to Right -56dB; Input to Input -68dB
Input selector centre-off position non-shorting; -38dB at max volume 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

Specifications subject to alteration without notice in keeping with our continuous improvement policy.







    • DESCRIPTION
    • SPECIFICATIONS
    • CUSTOMER REVIEWS
    • ASK A QUERY
    DESCRIPTION

    The Solo Ultra-Linear is supplied with our PSU1 outboard power supply.

    It lifts the performance of any good music source and quality dynamic headphones.

    They are well-known for their great stereo imaging and musicality, and the Ultra-Linear Diamond Edition (DE) will give you effortless dynamics, a powerful but not boomy sound, and a valvey (tubey) smoothness with detailed clarity.

    And It’s A Solid-State Headphone Amplifier!

    The Solo Ultra-Linear Diamond Edition (ULDE) headphone amplifier replicates tube amplification, but is solid-state to keep it’s performance for all its long life.

    We use our proprietary and well-guarded bandwidth extension technique we call Ultra-Linear which replicates this most desirable of tube characteristics.

    The Solo ULDE has a completely redesigned output stage and better noise performance than the earlier Solo UL, which means it will drive a much greater range of high performance over-ear dynamic headphones, and be hiss-free when used with in-ear monitors.

    Unlike tube amplifiers it works with all common headphone impedances, and its Z-Match impedance ranging volume control takes the place of gain switches, allowing amplifier gain to be fixed so it results in optimum musical performance.

    Generous phase and gain margins give it great high-frequency stability under all loading conditions. This coupled with its wide input latitude lets it effortlessly reproduce large musical transients with real clarity.

    Excellent power supply filtering and ultra-stable voltage regulation make its power so clean that it depicts the minutest of detail, the nuances – the shades of expression, so your music really communicates with you.

    It also results in superb stereo imaging with great separation between performers and instruments, dispensing a believable stereo sound stage.

    The Solo ULDE reveals the emotional content of your music and will immerse you in your music without fatigue for hours on end.

    READ MORE
    SPECIFICATIONS

    Headphone impedance range 8 to 2,000 Ohms / 16 to 600 Ohms preferred
    Power output (rms, both channels fully driven at 1% THD) 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 (THD plus noise at 9 o’clock volume control setting (qtr power)) 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) -95dB
    Channel balance better than 1dB
    Crosstalk Left to Right -56dB; Input to Input -68dB
    Input selector centre-off position non-shorting; -38dB at max volume 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

    Specifications subject to alteration without notice in keeping with our continuous improvement policy.

    READ MORE
    CUSTOMER REVIEWS
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    1 review for Graham Slee Solo Ultra-Linear DE
    Saurabh Ashtamkar
    Rated 4 out of 5
    July 2, 2021 at 12:33 PM
    I got a unit of graham Slee Solo (GLS) with Ultra Liner PSU for an audition/demo from Sunder of Goldfinch Acoustics. This unit was with me for around 2 weeks along with Headamp Gilmore Lite MKII, so I had enough time to listen to it and even compare it to the other amp from Headamp. Big thanks to Sunder (from Goldfinch Acoustics) for sending this unit for an audition/demo. All my impressions are based on the chain that I have used, if you change your chain then your impressions are likely to differ. The chain that I have used for this testing is Cowon Plenue 1 as source with its output fed to GLS via 3.5 mm to RCA converter cable. Headphones used are Hifiman He – 400i (most of the time) & AKG K712 Pro. GLS is a very well built unit with amplifier and PSU coming separately. Amplifier is built with an aluminum chassis which feels solid in hand & also looks premium. PSU for this unit is extremely well made, which weighs quite substantial. Both PSU and amp are cool to touch even after hours of operation. Amp being class AB, it’s expected to run cool which was the case observed. The volume pot is sizable in hand and rotates smoothly without any clicks and pops. At the backside of the amplifier it has two RCA inputs, also there is a DC input slot (looks proprietary). On the front panel you have an input selector switch along with the volume knob. Interestingly there is no power on-off switch which I find to be a major omission & it means you have to directly switch it on and off from wall power. Also another minor omission is no markings around the volume knob which I find to be very helpful and easy to know where its actual position is, though on volume know itself there is marking but having both is more useful. Now coming to the main part, its sound. In short it’s a very solid product in the sound department; there was no issue that I was able to find with this unit. Though this does not mean that this is a perfect amp; it's just that with my chain and HPs I was not able to find any flaw. If you use better gear/chain you might be able to find its flaws. Having said that this amp sounded neutral to me with no particular emphasis on any part of the audio spectrum. Bass was tight and punchy, it allowed me to listen to the texture in bass wherever it’s present in a track like Dancing with drums. HE400i bass definitely improved on GLS in terms of slam as well as texture. Mids was also the same, very good with enough texture and details, especially in vocal parts. This was apparent in various vocal centric tracks like Liberty from Anette Askvik or The beat hotel from Allan Taylor. There was no sibilance that I was able hear, especially in female vocals. Nor did mid bass and mids bled into each other. Treble was also very well extended but at the same time it was not harsh or piercing. There was sufficient air and the soundstage was also good in size (both width and depth). It had more than enough power to drive both He400i & AKG 712 Pro, with volume knob staying between 7-8 o’clock for most of the time and going max up to 9 o’clock only on very quiet tracks. Though it has quality power, but when it comes to quantity, it could have had better specs. This amp puts 140mW into 32 ohms, so any power hungry or difficult to drive hp like HE6 would not be properly driven by this amp. Otherwise all other easy to drive HPs should not be an issue for it to drive. Overall it’s a very solid amp with hard to fault anything. If this fits your budget and doesn't have any power hungry amp then this could very well be the only amp you would need.
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      ABOUT GRAHAM SLEE

      Specifically designed and lovingly made for the generation which appreciates top bracket high fidelity performance at affordable prices, by people of that same generation who truly understand their customers.

      ABOUT GRAHAM SLEE

      Specifically designed and lovingly made for the generation which appreciates top bracket high fidelity performance at affordable prices, by people of that same generation who truly understand their customers.

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