NOS Tube Upgrade Kit for HiFiMan EF-2a / EF-3 / EF-2C composed of a selected pair of 6AK5/5654 tubes with measurement certification.

You may choose between a pair of Mullard tubes, and a pair of Telefunken production ( AEG marked) tubes, carefully measured and selected. Limited stock available.

The HifiMan EF2a , EF3 and the new EF2C are compact desktop headphone amplifiers that deliver a surprising and balanced audio quality that are capable of driving excellent headphone models.

The russian tubes that comes standard with the amplifiers are at a very good level. With this upgrade kit, you can experiment the use of some of the very best NOS tubes of all times ( Mullard / Telefunken), at an affordable price.

Details:

- NOT included is the HiFiMan EF-2A / EF-5 / EF-2C ( can be purchased separately)
- Selected pair of tubes suitable for HiFiman EF-2a / EF-3 / EF-2C / Maverick Audio Tube Magic A1 / Little Dot 1
- Certification containing the effective measurements of your tubes