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Amperex Bugle Boy 12AX7 – Here ya go, gringo. Amperex Bugle Boy Holland 12AX7’s. This tube is known for being lively and open with excellent bass. I have a hundreds of Bugle Boys in stock, and what we have done is select out the very best for this listing.
This is the absolute cream off the top. They are brand new, lowest noise, and lowest microphony. Each tube has been inserted into a single tube moving coil phono stage circuit and evaluated by ear. Then measured for section-to-section uniformity. The logos are generally pretty good but even putting them in the box they fall off. So we will send out the best testing as a default, but if you want perfect logos because it’s being used for display or something please let us know in the notes section, and we will do our best.
Price is for a single tube. Logos may vary in quality from picture above. Price includes matching in any quantity you need at no extra charge.
We cannot guarantee these will come in Amperex boxes... many of the boxes are rotten, and we will use generic white boxes instead.
Platinum grade - The best of the best. Lowest noise and microphony with the tightest triode balance we have available. This is typically 10% or tighter, but may be higher depending on available stock.
Gold grade - Low noise and microphonics with a triode balance typically between 15% and 20%, but may be higher depending on available stock.
Driver/Buffer grade - Lowest noise but not the lowest in microphony. Triode balance will be similar to Gold grade.
This grade is only suitable for use in the driver stage of an amplifier, or the output/buffer stage of a DAC or CD Player.
If you have a preamp or phonostage, you need at least Gold grade.