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Upgrades and Modifications

Cary Audio has been in business since 1989 offering numerous products in the high-end audio industry. We offer plenty of services, upgrades, and modifications for our current and discontinued products. We want you to be informed of these services to help you keep your Cary product at its finest! Below is a list of some of the services provided. Please contact us if you have any questions or need assistance on upgrades and modifications for your Cary Audio product. Thank you for your support. Click here to view this information in a PDF File.


Upgrade price does NOT include the application fee ($30), labor fee ($95/hour), or shipping costs. There is a minimum labor fee of one hour.


Looking for a really nice way to upgrade the sound of your amp or preamp? Upgrading the coupling capacitors will provide a sound quality improvement that is well worth the money. We offer three types of capacitor upgrades.

Jensen Copper Foil/Paper-in-Oil/Pure Silver Lead-Out Capacitors

Jensen has been making capacitors in Denmark for over 90 years. Their Copper foil oil filled capacitors are legandary for use as coupling caps. They feature a pure copper foil with pure silver lead wires. The aluminum housing is hermeticaly sealed for long life and stability. These will provide improvements in imaging, clarity, detail warmth, and texture.

Retail Price: $90.00 each

Cary Audio by ClarityCap MR Capacitors

The Cary Audio ClarityCap MR series capacitors are custom made for us by ClarityCap. The capacitors are manufactured from a non standard polypropylene film using an ultra pure aluminum metallisation. The component is housed in a colored acrylic tube and encapsulated in an epoxy resin which limits the effect of mechanical resonances within the capacitor and assists in the overall sonic performance. Upgrading your amplifier or preamplifier with the ClarityCap MR capacitors can show improvements in imaging, detail, clarity, air and bass definition, yet the ClarityCap MR series capacitors are very smooth and clean without any edge or hardness.

Retail Price: $90.00 each

HEXFRED RECTIFIERS If you have not had it done to your favorite Cary Audio piece, the Hexfred option makes an awesome difference! Hexfreds are high speed low noise rectifiers and replace your existing standard rectifiers in the power supply. You will notice more speed, air, detail, imaging and tighter bass, yet a cleaner clearer sound quality. The Hexfreds help to provide a cleaner, faster DC voltage which shows up very noticeably in the sound quality. There is one more layer of hash and hardness (noise) that is removed so that you can just enjoy the music! Bass is faster with more details and the midrange and highs are cleaner and clearer. You will hear more detail with less bite.

Retail Price: $25.00 each


The Grayhill Selector Switch is a great way to update your input selector switch, and is designed to last the life of your equipment with its mil-spec standard. Its sealed enclosure with gold plated contacts allows for smooth action, long life, and excellent conduction. It will keep your unit sound and switching perfectly for years. Works in the SLP-98, SLI-80, 300SEI, and many other Cary preamplifiers and integrated amplifiers.

Retail Price: $45.00 each


Excellent high quality WBT speaker posts for improved overall sound and connection.

Retail Price: $50.00 each


Wire CD or any other input for improved detail, resolution, and overall better sound quality. Available for the SLI-80, 300SEI, and SLP-98.

Retail Price: $125.00 per input (includes labor)


Modification price does NOT include Shipping Costs.


Allows the connection of a surround sound processor or receiver’s right and left outputs to be routed passively through the SLP-98 directly to the main right and left outputs providing convenience and signal purity. When the SLP-98 is turned off the right and left home theater inputs are connected directly to the main right and left outputs via an internal relay. This upgrade is standard for the SLP-03 and SLP-05. Added to the SLP-98L: You will loose the RCA phono inputs Added to SLP-98P: You will loose one set of main outputs.

Retail Price: $225.00 (includes parts and labor)


Converts the SLP-98L to the SLP-98P by adding the phono stage and tubes.

Retail Price: $500.00 (includes parts and labor)

LUNDAHL MC TRANSFORMERS Installed in the SLP-98P phono stage will convert the SLP-98P to a high-gain high-end quality MC input.

Retail Price: $500.00 (includes parts and labor)


We are very pleased to announce an upgrade for the PH-302 to the PH-302 MKII. The upgrade consists of including on the rear of the chassis a switch which will allow the Moving Coil (MC) section of the phono preamplifier to be adjusted from 10 ohms to 47k ohms. There will be six separate settings for this loading feature. This will allow for more optimized matching of low output phono cartridges to the PH-302 MKII. Also, the MC gain level will increase to 60dB. This will give the PH-302 MKII the ability to drive even lower output MC cartridges. In addition to the technical and sonic enhancements, the upgrade will include a new chassis that incorporates the rear panel switch for the MC adjustments and a new face plate. A new PH-302 MKII Owner’s Manual will be included in the return package with the phono preamplifier.

Retail Price: $800.00 (includes parts and labor)


There has been an upgrade to the PH-302 MKII that consists of modifying the Moving Coil (MC) gain level to 60dB from 54dB. This will allow the PH-302 MKII the ability to drive even lower output MC cartridges. The upgrade is available for all PH-302 MKII purchased prior to November 1, 2010.

Retail Price: $275.00 (includes parts and labor)


We are pleased to announce a MKII version upgrade of the CAD 120S. Building upon a solid foundation, the CAD 120S MKII incorporates a modified and improved feedback network circuitry that reduces overall global feedback, allowing for a wider soundstage with greater resolution of details. Adjustments to the input gain stage have also been added to increase dynamics while improving microdynamics. Additionally, this new input gain stage allows the new CAD 120S MKII to achieve greater volume and increases its compatibility with a wider variety of preamplifier models and brands. In addition to the technical and sonic enhancements, the upgrade will include a face plate and top cover indicating the new CAD 120S MKII model number. A new CAD 120S MKII Owner’s Manual will be included in the return package with the amplifier.

Retail Price: $600.00 (includes parts and labor)

Pricing By Unit

Price does NOT include any applicable Bench Fee ($125) or Shipping Costs.


Upgrade or Modification SL100 SLP98L SLP98P SLP05 SLI80 300SEI CAD120S MkII 805AE (per amp) 211FE (per amp)
ClarityCap MR NA $90 X 2 $90 X 4 NA $90 X 4 $90 X 4 $90 X 4 $90 X 3 STD
Jensen Caps NA $90 X 2 $90 X 4 NA $90 X 4 $90 X 4 $90 X 4 $90 X 3 $90 X 4
Hexfreds NA $25 X 4 $25 X 4 NA $25 X 5 $25 X 5 $25 X 6 NA NA
Greyhill Switch NA STD STD NA $45 $45 NA NA NA
WBT NA NA NA NA $50 X 4 $50 X 4 $50 X 4 $50 X 6 $50 X 6
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