Upgrades

The following is a list of upgrades we've installed in the past.
We're no longer offering upgrade services but are able to service machines we upgraded.
If you need service, please email dougoade at yahoo.com or submit a question via the website.
Product Image Item Name+ Price
Marantz PMD 661, MKII & MKIII Warm MOD

Marantz PMD 661, MKII & MKIII Warm MOD

The Marantz PMD 661, MKII & MKIII Warm MOD upgrade rebuilds the XLR inputs using high speed, low noise and very low distortion FET op amps that...
$145.00
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Marantz PMD 670 Basic MOD

Marantz PMD 670 Basic MOD

Marantz PMD 670 Basic MOD keeps all features intact and reduces the external mic input preamp hiss while increasing speed and detail thru the XLR...
$180.00
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Marantz PMD 671 ACM MOD

Marantz PMD 671 ACM MOD

The Marantz PMD 671 Advanced Concert MOD keeps the line input intact but removes the built in mic, DL mono, filters and limiter/ALC circuit. This...
$285.00
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Marantz PMD 671 Advanced MOD

Marantz PMD 671 Advanced MOD

Marantz PMD 671 Advanced MOD keeps the line input and limiter/ALC circuit intact but removes the built in mic, DL mono and filters. This circuit...
$225.00
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Marantz PMD 671 Basic MOD

Marantz PMD 671 Basic MOD

Marantz PMD 671 Basic MOD keeps all features intact and reduces the mic preamp hiss thru the XLR connections as well as the built in mics. Click here...
$165.00
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Marantz PMD-561 Super MOD

Marantz PMD-561 Super MOD

The Marantz PMD 661MKII Super MOD upgrade rebuilds the XLR inputs using very high speed, very low noise and super low distortion op amps that...
$145.00
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Marantz PMD-661&MKII Plus MOD

Marantz PMD-661&MKII Plus MOD

Marantz PMD-661 & PMD-66MKII Plus MOD. This is an add on to an existing upgrade and must be installed at the same time as a standard upgrade or...
$95.00
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Marantz PMD-661&MKII Plus MOD stand alone

Marantz PMD-661&MKII Plus MOD stand alone

Marantz PMD-661 & PMD-66MKII Plus MOD. This is an add on to an existing upgrade that is NOT installed at the same time as a standard upgrade or...
$150.00
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Marantz PMD-706 Concert

Marantz PMD-706 Concert

The PMD-706 Concert upgrade rebuilds the XLR inputs using high speed, low noise and very low distortion op amps that dramatically improve fine detail...
$225.00
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Marantz PMD-706 Concert + Warm

Marantz PMD-706 Concert + Warm

The PMD-706 Concert + Warm upgrade rebuilds channels 1 & 2 XLR inputs using high speed, low noise and very low distortion op amps that dramatically...
$225.00
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