From the company that brought to you the first of the Jolida tube amp modifications (yes, we are the originals), Response Audio now has updated the Special Edition modifications to include further attention to the power supply and other aspects to take them to the next level once again.
Anybody can change tubes and add a few things here and there. What you get with the Signature Modification is basically a complete rebuild using only the best internal components based on critical
evaluation and testing. Plus, no matter how old your unit is, we offer a full 1 year warranty on
our work.
Why spend your hard earned money on a new amp that could set you back thousands of $$$$. Transform your Jolida 302, 502 or 801 "A" or "B" Series amplifier into something that will compete with many of today's high dollar pieces for a fraction of their cost. You will think you just purchased a brand new amp and still have money left over for further system upgrades.
The reviews and customer feedback says it all. Check out our
Feedback Pages as well as the review of
our Bella EXtreme 3205
amplifier at EnjoyTheMusic.com. If you have your 302/502 upgraded with
the Signature Modifications, you will end up with the same unit as
reviewed.
The Platinum upgrade brings
you to the same level as out Bella EXtreme 3205
Platinum that was debuted at RMAF07. Check out the show reports
HERE
We now incorporate some new modifications to the power supply on the 302, 502, and 801. What this means for the end product is much better dynamics, headroom and control in the lower frequencies providing a fuller presentation.
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Audience AuriCap capacitors used
in the coupling positions on Signature units. SoniCap Platinum Teflon
capacitors used for "Platinum" modifications..
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SonicCraft SoniCap Gen 2
capacitors used at signal ground locations
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Power Supply filter capacitors
upgraded to higher capacitance / lower ESR Panasonic units
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High voltage bypass capacitors
used in power supply bypass
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Dale/Vishay 1 watt 1%,
non-magnetic metal film resistors used throughout the signal path. We
have chosen 1 watt units over original .5 watt for a quieter
operation.
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Carbon Comp resistors used at
grid stop location on Signature units. Mills non-inductive resistors
used in Platinum modifications.
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Dale/Vishay 5 watt, 1%
non-magnetic resistors used for cathode ground.
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Dale/Vishay 3 watt 1%,
non-magnetic resistors used in bias stage for lower noise and also
allowing for biasing range to accommodate EL34, 6550, KT88 output
tubes ON NON RC UNITS ONLY
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Fairchild "Ultra Fast -
Soft Recovery" diodes are utilized in the power supply rectifying
stage for lower noise floor and quieter background.
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Alps Blue stereo volume control
or dual mono Carbon based volume controls utilized on older units.
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Internal wiring upgraded to
either 22 awg. high quality copper or 22 awg high quality silver
plated copper. On older "A" Series amplifiers
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RCA input jacks upgraded to
higher quality units on older "A" series amplifiers.
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Balance control bypassed.
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OPTIONAL: Bybee Quantum
Purifiers utilized in the B+ voltage. One pair required $200
installed.
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High quality silver solder used
throughout.
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Biased and bench tested for 2
hours
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Minimum 12 hour system tested
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Labor 5 hours
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Warranty: Limited 1 year parts
& labor on replacement parts only.
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Click
here to read our warranty
PRICING: Newer models with
silver face plates
Signature:
$650 + return shipping
Platinum: $750 + return shipping
PRICING: Older models
("A" series and older "B" series with gold faceplates)
Signature: $675 + return shipping
Platinum: $775 + return shipping
PRICING:
$599 if unit is built as straight power amp. All models.
Click
HERE for recommended upgrade tubes
