For sale is a Matched Quad (4) NOS/NIB Mullard 5654/6AK5 BLACK HOLE plate tubes. Could be used in any amplifier that takes these tubes.

Great sounding tubes with tight bass, warmth you would expect from Mullard and clear highs.

All tubes come matched within 10% of each other.

Review from a customer: "Excellent tubes, your experience may be different depending on your sound setup. Rich, deep bass, lush mids and silky highs. Excellent spacial effect as well. Vocals shine. Way better than GE Jan 5654 tubes by a large margin. These tubes make it difficult to turn off the system at the end of the evenings to get to bed."

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Welcome to Tube Maze Store

Here you will find a wide selection of NOS and reissue tubes. 

We've been in business since 2012 with great reviews on Ebay, so buy with assurance that you will get a great product and if you are not happy with your purchase we will take it back and refund you full amount - no fuss, no hassle!

We test and match all tubes before shipping on many available testers - Amplitrex AT1000, Hickok 539c, MaxiPreamp, MaxiMatcher, MaxiBurn. All tubes are also tested for noise and microphonics.