Special Purpose

• This tube is interchangeable with a 12AX7. 
• Gold Pins

New Old Stock * No longer available for export
MFR: Sylvania
SKU: 5751-GOLD-SYL

For use in audio amplifiers.
New old stock * No longer available for export
MFR: Raytheon
SKU: 5670WA-RAY

NOTE: Picture for reference only. Box appearance and tube appearance may change.

5751 JAN Sylvania Electron Tube  (NOS)

This tube is interchangeable with a 12AX7. 
New Old Stock * No longer available for export
MFR: Sylvania
SKU: 5751-JAN-SYL

Designed for use in detector applications in UHF and low frequencies.
New old stock * No longer available for export.
MFR: Sylvania
SKU: 5903

Designed primarily for use in control circuits where long life and stable performance is necessary.
New old stock * No longer available for export.
MFR: RCA, Sylvania
SKU: 5977

New old stock * No longer available for export 
MFR: Sylvania
SKU: 6159-SYL

NOTE: PICTURE FOR REFERENCE ONLY. BRAND / CONDITION MY VARY.

Designed for use in high-end digital computers. Each section features a high zero bias plate current, sharp cutoff and a seperate cathode connection.

• Base: 9-Pin
• Cathode: Coated Unipotential
• Mounting: Upright or with Plate Majors in Vertical Position

New Old Stock * No longer available for export
MFR: Sylvania
SKU: 6350-SYL

This 6922 tube type was rated the "best buy" by Vacuum Tube Valley magazine in their 6DJ8 / 6922 tube shootout. They cited a better bottom end and "less offensive" high frequencies as two of the reasons for their choice. This is also the same tube which is sold by Richardson's under the Bugle Boy brand name.

New Old Stock * No longer available for Export
MFR: Sylvania
SKU: 6922-SYL