Manley STINGRAY INTEGRATED AMPLIFIER Spezifikationen PDF herunterladen

equipment review

Australian Hi-Fi

Legend has it that EveAnna Manley named

the Stingray following a chance remark by

the legendary J. Gordon Holt*, founder of

Stereophile magazine, who after looking at a

bar-napkin sketch Ms Manley had propped

up next to his martini during a high-end

show, remarked that she’d drawn a picture

of a stingray.

I have no idea of whether this story

is true or not, but the amplifier is

certainly called a ‘Stingray’ and it does

have a stylised illustration of a Stingray

on the front panel that looks as if it could

have been drawn on a bar napkin—and,

if you get the angle exactly right when

looking at the amplifier from above, it

does indeed look a little like a Stingray.

However, even if you don’t agree that

the amplifier looks like a Stingray, you’d

have to admit that it’s certainly a very

unusual-looking amplifier: there aren’t

too many amplifiers with six sides—nor

have there ever been. (And contrary to

some reports, it’s not a hexagon!)

The Equipment

You don’t need me to tell you it’s a valve

ampliﬁer. For those ‘in the know’, the

fact that it’s made by Manley Laboratories

would be sufﬁcient, while for those not in

the know, the photograph above speaks

for itself. What you do need me to tell you

is that it’s a push-pull integrated ampli-

ﬁer that’s rated at 40-watts per channel

Manley Laboratories

Stingray Valve

Integrated Ampliﬁer

into 5Ω. The Stingray used to be rated at

50-watts per channel, but that was before

Manley Labs decided to make the output

stage switchable between ultralinear and

triode operation. The dual-mode ampliﬁer

is now rated at 40-watts (ultralinear) or

20-watts (triode). Owners of single-mode

(ultralinear) Stingrays can have their old

models upgraded if they want. The model

I received, hence the one reviewed here,

was a single-mode Stingray. Why 5Ω when

most speakers are 4Ω, 6Ω, or 8Ω? It’s not as

strange as you’d think, because the varying

impedance of all moving coil loudspeak-

ers means that any output transformer

secondary will be incorrectly matched a lot

of the time, so picking a ‘midway’ point

*Since Australians are renowned for claiming anyone

famous as being ‘one of our own’ if there’s even the most

tenuous link to Australia (such as being born and raised in

New Zealand!), there’s a good case for us claiming Holt as

an Aussie. Although he was born in the US, Gordon J. Holt

arrived in Australia in 1935 and lived in Melbourne until 1952,

during which time he became a published writer, selling

his first story on the design and construction of a battery-

operated portable radio to the magazine Radio and Hobbies,

which later became Electronics Australia. He has stated

for the record that the descriptive language he used in the

first issue of Stereophile was ‘borrowed’ from the Radiotron

Designer’s Handbook published by the Amalgamated

Wireless Valve Company of Australia, later to become AWA.

ManleylabHFSep06.indd 20 22/01/2009 1:55:37 PM

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Inhaltsverzeichnis

Seite 1 - Manley Laboratories

equipment reviewer 20 | Australian Hi-FiLegend has it that EveAnna Manley named the Stingray following a chance remark by the legendary J. Gordon Ho

Seite 2

Australian Hi-Fi | 21Brand: Manley LaboratoriesModel: StingrayCategory: Valve Integrated AmplifierRRP: $2,799.00Warranty: Five Years (Valves: 6 mont

Seite 3 - Listening Sessions

22 | Australian Hi-Fi(voltmeter). Now I can understand why Manley wouldn’t supply a multimeter, even though you’ll be able to pick a suitable one up

Seite 4 - Conclusion

24 | Australian Hi-Finot only proved the truth of my surmise, but that I had completely overlooked a note on the ‘Specifications’ page supplied by

Seite 5 - TEST RESULTS

TEST RESULTS26 | Australian Hi-Fier er Manley Laboratories Stingray Valve Integrated AmpliﬁerTest ResultsNewport Test Laboratories usually meas-ures

Seite 6

TEST RESULTS28 | Australian Hi-Fi0.08%, increasing to 10.29% at 50-watts, under the test conditions noted earlier.The spectrograms show the output s

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