Neo-Classic 500 Monoblock Retube Kit NEO250 and (2x) KT90 tube for

and (2x) KT90 tube for output

or X in their serial number (REFCARDT###+  or REFCARDX###+  or REFCARD7P###+)

and (4x) EL34 tubes for output

and appreciable quality

This kit is only for Manley MAHI's under any serial number with MAHI in it

Neo-Classic 500 Monoblock Retube Kit NEO250 and (2x) KT90 tube forThis kit is only for Manley NEO500's with any serial number. Includes (1x) 12AT7 tube for input, (2x) 6414 or 12BH7 tubes for driver output, and (10x) KT90 tubes for output. Be aware that some tube brands are subject to change over time and may not match the pictures shown. You will need 2 of these kits if you're retubing a pair of amps.