GRAHAM SLEE

GRAHAM SLEE - muzicalitate si calitate la un pret incredibil si dimensiuni miniaturale.
Versatile, usor de utilizat si mai ales "prietenoase" din punct de vedere al matching-ului
cu celelalte componente din sistem (Pick-up, Amplificator sau Casti), produsele
GRAHAM SLEE si-au facut un renume demn de invidiat de-a lungul timpului.

Fabricate exclusiv in UK, manual, au dobandit nenumarate premii de-a lungul timpului,
devenind celebre in egala masura atat Phono Stage-urile cat si Head Amp-urile.

Din 1 Februarie 2017, in Romania, la STEREO PLANET.

Dedicated To The Solo Headphone Listener
All of the Solo's amplification is concentrated into its single stereo ouput - it doesn't compromise on
sound like multiple outputs will.
If you listen on your own it's the ideal headphone amp!
The Solo SRGII headphone amplifier is the refined version of our legendary "green" Solo.

Plus it offers an easy and simple upgrade path which involves swapping its outboard "green-energy"
power supply to our PSU1.

SRG stands for Studio Reference Green.
SRGII is the MkII version.
It's available "in green" with its energy saving basic power supply - or go straight for the upgrade and
buy it with the PSU1 power supply.

Delivering Wonderful Music Under Adverse Conditions
The Solo's have a long history of delivering wonderful music going back to 2001 as borne out in
numerous reviews over the years - often beating off stiff competition from more expensive headphone amps.
The "green" Solo surfaced in 2007 as the first ever seriously hi-fi headphone amplifier to succesfully run
off green energy otherwise known as switched-mode power.

It had to be done because legislation on energy using products was about to become a legal requirement
by 2010, and switched-mode power supplies have since become the de-facto source of outboard power for
economy product variants such as the less-expensive Solo SRGII option.

The problem earlier hi-fi products had was that switched-mode power has so much high-frequency distortion
content, and as all amplifiers output what is essentially signal-modulated power, that distortion content ends up
at your headphone diaphragms.

The complex behaviour of such distortion content with headphone diaphragm earpieces, not forgetting the
amplifier itself, simply throttles the sound.

The "green" Solo, and now the Solo SRGII, overcame the problems switched-mode power caused, but went
much further and the SRGII sound can fend off competition from more expensive headphone amplifiers using
non switched-mode linear power.

Headphone Impedance Sensing
The Solo SRGII headphone amplifier has another trick up its sleeve, that being its headphone impedance sensing output.
Some output impedance is essential because headphone cables are highly capacitive, and without output
impedance, amplifier phase margin is seriously compromised.

High impedance headphones with long cables (and there are plenty of them) can lead to phase margin reversal
and that's why many solid-state amps don't work well with headphone impedances much greater than 30-40 Ω.

Exactly how much output impedance can be tolerated before a headphone stops performing well, will depend on
the impedance of the headphone being used - and we can never know what the customer is using.
Headphones have impedance dips and peaks across their audible spectrum, needing more control at some
frequencies more than others.
Zero output impedance would be ideal, but screwing down the high frequency performance to preserve phase
margin is no good for outright musical performance.
Output impedance cannot therefore be a fixed value that suits all headphones.
But, by sensing the headphone current, extra power can be delivered to the headphone to cover for impedance dips,
and less power for impedance peaks - thus making for a smoother sound.

The actual output resistance can be kept constant guarding phase margin whilst output impedance will appear to
be changing to compensate.
And that's basically how the Solo Studio Reference Green MkII achieves its really well-balanced sound regardless
of headphone impedance.

And importantly for the most sensitive headphones, it doesn't hiss!

REVIEWS

"If you need your headphone amp to tell you exactly what is on a recording over and above anything else, you can
stop reading the test now and go and buy the Solo SRGII.
The detail retrieval it manages to conjure up is truly exceptional and this gives the Spektor and Melnikov pieces in
particular an immediacy that is extremely impressive.
It has no trouble discerning activities from the supporting strings in the Schumann piano trio that are lost in the
mix elsewhere.
This is then coupled with a tonality with voices and instruments that is unfailingly believable.
The really good news is that none of this seems to affect the Solo SRGII’s ability to pick up the pace and deliver
with the two more uptempo tracks as well.
It is able to deliver the thumping bassline of the Satriani piece with impressive agility and timing."
RECOMMENDED AWARD / HIFI CHOICE

Specifications
Headphone impedance range:
16 to 600 Ohms preferred
8 to 2.000 Ohms acceptable

Power output (rms, both channels fully driven):
32 Ohms: 27mW/channel
600 Ohms: 23mW/channel

Frequency response (-3dB):
32 Ohms load: 27Hz - 35kHz
600 Ohms load: 10Hz - 39kHz

Distortion (THD plus noise, ref 1kHz): 0.02%
Output noise (20Hz-20kHz, CCIR quasi-peak): -84dB
Channel balance: better than 1dB, "9 to 3 o'clock" positions
Crosstalk: Left to Right -57dB; Input to Input -68dB
Mute: Signal off mute, non-shorting
Output Stage: Bipolar class AB

Supply voltage: 24V DC

Dimensions (W x D x H): 107 x 185 x 50 mm
Weight: 180 g

Color: silver

REVIEWS

"If you need your headphone amp to tell you exactly what is on a recording over and above anything else, you can
stop reading the test now and go and buy the Solo SRGII.
The detail retrieval it manages to conjure up is truly exceptional and this gives the Spektor and Melnikov pieces in
particular an immediacy that is extremely impressive.
It has no trouble discerning activities from the supporting strings in the Schumann piano trio that are lost in the
mix elsewhere.
This is then coupled with a tonality with voices and instruments that is unfailingly believable.
The really good news is that none of this seems to affect the Solo SRGII’s ability to pick up the pace and deliver
with the two more uptempo tracks as well.
It is able to deliver the thumping bassline of the Satriani piece with impressive agility and timing."
RECOMMENDED AWARD / HIFI CHOICE

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Imagine
Produs	GRAHAM SLEE Headphone Amplifier (+ PSU1 Power Supply) - BEST BUY Solo SRGII PSU1
Descriere	GRAHAM SLEE - muzicalitate si calitate la un pret incredibil si dimensiuni miniaturale. Versatile, usor de utilizat si mai ales "prietenoase" din punct de vedere al matching-ului cu celelalte componente din sistem (Pick-up, Amplificator sau Casti), produsele GRAHAM SLEE si-au facut un renume demn de invidiat de-a lungul timpului.
Specificatii	Specifications Headphone impedance range: 16 to 600 Ohms preferred 8 to 2.000 Ohms acceptable Power output (rms, both channels fully driven): 32 Ohms: 27mW/channel 600 Ohms: 23mW/channel Frequency response (-3dB): 32 Ohms load: 27Hz - 35kHz 600 Ohms load: 10Hz - 39kHz Distortion (THD plus noise, ref 1kHz): 0.02% Output noise (20Hz-20kHz, CCIR quasi-peak): -84dB Channel balance: better than 1dB, "9 to 3 o'clock" positions Crosstalk: Left to Right -57dB; Input to Input -68dB Mute: Signal off mute, non-shorting Output Stage: Bipolar class AB Supply voltage: 24V DC Dimensions (W x D x H): 107 x 185 x 50 mm Weight: 180 g Color: silver REVIEWS "If you need your headphone amp to tell you exactly what is on a recording over and above anything else, you can stop reading the test now and go and buy the Solo SRGII. The detail retrieval it manages to conjure up is truly exceptional and this gives the Spektor and Melnikov pieces in particular an immediacy that is extremely impressive. It has no trouble discerning activities from the supporting strings in the Schumann piano trio that are lost in the mix elsewhere. This is then coupled with a tonality with voices and instruments that is unfailingly believable. The really good news is that none of this seems to affect the Solo SRGII’s ability to pick up the pace and deliver with the two more uptempo tracks as well. It is able to deliver the thumping bassline of the Satriani piece with impressive agility and timing." RECOMMENDED AWARD / HIFI CHOICE
Premii
Preţ:	3,499.00 RON (TVA inclus)
Disponibilitate	Disponibil

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