Have these been burned in by you or the manufacturer before shipping?

These tube were purchased because of the really nice prices, they worth the trouble. I'm not sure the seller burned them in the tubes or any one else for that matter. Of the 16 I used, I had multiple failures with in the first few weeks. The failure were all over the place, meaning sometimes just the tube and another times it took a fuse. Do yourself a favor, find a dealer who burns them in and has a good reputation, it may cost a bit more but it will pay off in the long run.

Can these tubes work well with MC275 VI? No bias necessary?

These are great sounding tubes. I have a prima luna amplifier with auto bias, you need to check your owners manual about bias settings for your particular amp.

Where are these manufactured

New production Genalex Gold Lion tubes are assembled by hand in the Reflektor factory in Saratov, Russia

Would these tubes go good with a marshall jcm800 head?

They are some of the best KT88's available today. I haven't used them in a guitar amp, but I bet they'd sound killer in a Marshall.

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Genalex KT88 Gold Lion Power Tube Sets Medium Quartet

Product ID: 161646868

🎸Medium quartet matched for balanced guitar tone

🟡Gold-plated grid wire for pristine signal clarity

⚙️Tri-alloy clad plate structure for unmatched durability

€ 662.44

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Description

🦁 Unleash the King of Power Tubes – Elevate your sound, own the stage!

MEDIUM BREAKUP STYLE - Perfect balance of headroom and smooth overdrive for expressive guitar tones
GOLD PLATED GRID WIRE - Enhances signal purity and reduces noise for crystal-clear audio
ROBUST TRI ALLOY PLATES - Engineered for longevity and superior heat dissipation under heavy use
LEGENDARY SOUND HERITAGE - Recreated classic KT88 tubes powering iconic amps like McIntosh MC275 & Marshall Major
PRECISION MATCHED QUARTET - Factory computer-matched tubes ensure consistent, reliable performance every time

The Genalex KT88 Gold Lion Power Tube Sets Medium Quartet are premium, gold-plated amplifier tubes meticulously engineered with carbonized screen grids and a tri-alloy clad plate structure. Designed as a medium break-up style, these computer-matched tubes deliver a perfect balance of headroom and smooth overdrive, making them the go-to choice for audiophiles and guitarists seeking legendary tone and durability in classic amps like the McIntosh MC275 and Marshall Major.

Specifications

ASIN	B000YAXXSW
Best Sellers Rank	403,233 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 2,856 in Cycling Tubes
Body Material	Steel, gold plated
Colour	Gold
Customer Reviews	4.6 4.6 out of 5 stars (55)
Date First Available	15 Sept. 2013
Item Weight	408 g
Item model number	KT88 GENALEX PL QUAD
Material Type	Stainless Steel
Product Dimensions	10.16 x 10.16 x 13.97 cm; 408.23 g

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TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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€ 662.44

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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