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Bogner Metropolis High Gain Option
Price: $249.50
Bogner Metropolis High Gain Option
Product Details

Want all the gain you can get? This is our High Gain Option Retube Kit for the Bogner Metropolis Heads and Combo Amps. It contains a matched quad of JJ EL84's for power, a JJ GZ34 rectifier tube, a single EL84 for the reverb driver, two standard ECC83S's for V10 and V11 along with three handpicked High Gain ECC83S's one being current balanced for the phase inverter in V3. 

Just let us know in the comments section if you're looking for an early breakup, a moderate breakup or a later breakup for more headroom in which case we will choose the coolest grades we have available for the power tubes.

The single EL84 is located in V9 closest to the input jack. The two High Gain ECC83S's are located in V1 and V2 and the Balanced High Gain ECC83S is located in V3 which is the sixth tube away from the input jack. 


Combo amps are very hard on tubes because of vibrations which can cause tube rattle with any brand of tube. If your amp is the combo version and you play by yourself in a quiet environment or record with your amp you may want to consider using the EuroDamper tube damper rings for the four EL84’s and the GZ34. These are available in the "Related Products” tab as a set of four small dampers and one large damper for the GZ34 and will greatly decrease tube rattle. ** Note; the wire tube retainers will not fit all the way over the damper rings.

These amps are cathode biased, there is no bias adjustment to be made. The amount of clean headroom you’ll get from the power section is somewhat dictated by the grade of power tube used. A cooler grade of EL84’s will give you more clean headroom, whereas a warmer grade will give you earlier breakup. If you order online, leave us a note in the comments section letting us know your headroom preference (max headroom, middle of the road or early breakup).
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