Diva Questions & Answers
Will the Diva match other amplifiers? Will they match solid-state?
most cases, yes. But the best match is, of course, a Diva with
Diva tube amplifiers difficult to maintain?
Diva tube preamplifiers require absolutely no maintenance. In
fact, they can be left switched-on all the
time. They sound better that way.
power amps need to have the tube bias checked and adjusted about
once a year. You can easily do this yourself using a multi-meter
and small screwdriver. Or you can ask any audio technician.
long will the tubes last? Are, replacement tubes easily available?
preamp tubes, driver tubes for the power amp as well as 2A3, 300B
and 211 output tubes will easily last 10 to 20 years, or even
longer. Only the EL34 output tubes of the Blue Sky power amps
need to be replaced after 3 to 5 years. Replacements are generally
inexpensive and readily available.
Diva amplifiers be upgraded by changing to better quality components?
not so easy. Diva amplifiers sound good because every component
is carefully selected to work in harmony with all the rest. Changing
one component will not necessarily improve the sound.
while some components may not look good - or they may not have
a famous brand name with a high price tag - all have been chosen
because they sound great.
don't Diva amplifiers have balanced inputs / outputs?
of all, be aware that many "balanced" amplifiers are only pesudo-balanced
designs. They have balanced or XLR sockets, but the circuit is
vs Diva Pro - what's the difference?
amplifiers give you the best value for money. Expensive components
are used only when the improvement in sound is significant. Diva
Pro Series amplflers are no compromise designs which use costly
components even if they improve the sound only marginally.
components, however, do not guarantee good sound. Musicality
comes from good design and from careful selection of components
to make sure that they work in harmony.
Series amplifiers also feature a special power circuitry
developed by T S Lim. Called "ripple remover", this special
circuit suppresses background noise by more than 1,000 times!
The result is a very much quieter presentation that lets you
hear a lot more of the emotion - the soul - of the music.
balanced transmission requires two exactly identical sets of circuits
working opposite to each other, in a mirror image. it is virtually
impossible to produce two exactly identical circuits. And when
not exactly identical, distortions arise.
transmission doubles the signal strength and this may be needed
if the interconnect cables exceed 10 metres. A stronger signal,
however, is not necessarily a better sounding signal.
preamplifier should I choose?
you use horn or other very high sensitivity loudspeakers, the
tube buffer passive preamp is your best choice. If you
use box or panel speakers, choose an active preamp:
100 / 100 Pro are minimalist single-tube designs, for
audiophiles on a minimal budget.
200 / 200 Pro are two-tube designs for audiophiles who
like to experiment, since they can be used with any" 12 series"
tubes: 12AT7, 12AU7, 12AX7, 12AY7, 12BH7... Also, because
both tubes drive both channels, you can combine two tubes
of different brands to get the best qualities of both.
M-7 is the top of the range, for those who want "the best".
Diva owner who owns both the M-7 and the Classic 100
Pro, however, prefers the 100 Pro for rock music
because of its "raw energy", while the M-7 performs better
for all other music.
aren't Diva power amps Class A designs?
is a complex issue and you can write an entire book about it.
The short answer is that a Class A design offers no sonic advantages.
It increases heat, shortens tube life and the mid-bass impact
suffers. For a fuller discussion, please read David Manley's The
the Diva drive my loudspeakers?
Diva Blue Sky / Blue Sky Pro power amps, although rated at only
5OW, are extremely powerful. They work wonderfully with most medium
to high efficiency loudspeakers with at least 4 ohm nominal impedance
(the minimum impedance can be lower). They perform well even with
many "difficult" loudspeakers, including the ATC I 0 & 20
(8OdB / 82dB), LS3 / 5A (82.5dB), B&W 80 1, Quad ESL63 and
using 2A3, 300B or 211 tubes have lesser power and require more
are the input sockets of the power amp at the front? Can they
be shifted elsewhere?
inputs ensure the shortest possible signal path to the driver
tubes, with no connecting wires. This is a purist design used
by many highly successful amplifiers in the past: Dynaco 70, Marantz
8 and early amplifiers by RCA, Western Electric, Scott, Fisher,
McIntosh and others. Shifting the inputs to the back requires
connecting wires that run past the transformer. This introduces
interference and hum.
the phono amp switchable between Moving Magnet and Moving Coil?
such a switch degrades the sound significantly. Those who start
with MM (moving magnet) cartridges can buy the step up transformer
separately when they switch to a MC (moving coil) cartridge.