Skip to content

Mastering Massive Passive Retube Kit Version B

Marsoni M251S
Sale price$165.00
Pay 4 payments of $41.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Mastering Massive Passive Retube Kit Version BThis kit is only for Manley MASTERING MASSIVE PASSIVE's with serial number MMMSMP871 and up. Includes (2x) 5814 or 12AU7 tubes for input, and (4x) 6922 tubes for driver output. Be aware that some tube brands are subject to change over time and may not match the pictures shown.
Easy Shipping

Quick Dispatch:

Your Mastering Massive Passive Retube Kit Version B orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Mastering Massive Passive Retube Kit Version B ships.

Need Help?
Questions about Mastering Massive Passive Retube Kit Version B, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Mastering Massive Passive Retube Kit Version B in your area.

Get Shipping Estimates

Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1991 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Mark K
Lake Worth, US
★★★★★ 5
Well made. Easy install.
Size: Standard--black, Size: Standard--black
These were easy to install. All the hardware was included. They look good. Seems well made.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026
O
Verified Purchase
Optionado
Bozeman, US
★★★★★ 5
Sturdy solution
Size: Standard--black
I needed a way to mount rear speakers and this was the solution. They're sturdy and adjustable to fit reasonably sized speakers. They also pivot up and down and swivel so really perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
G
Verified Purchase
greg
Cuba, US
★★★★★ 5
Works good
Size: 500 A
Works good of 0 gage wiring
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2024
D
Verified Purchase
Daniel T McCallion
Draper, US
★★★★★ 5
Not all 100-500ah fuses are the same size as the holder you may have and vise versa
Size: 500 A
Better than most and best to use ring terminal like this
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 7, 2023
W
Verified Purchase
Westley
Grantham, US
★★★★★ 4
Good job .
Size: 500 A
Product is working as it should so far .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026

recommand products