Pair (2 Tubes) 7 Pin GE Jan 5654W Fully-Tested Vacuum Tubes 5654/6 Ak5/6J1/6J1p/Ef95 Audio Amplifier Electron Tube Upgrade - 5654W Platinum Grade Pair

• Tested and matched pair (2 tubes) of NIB/NOS JAN 5654W 7 pin vacuum tubes with low noise. Considered one of the best tubes in the 5654/6AK5/EF95 family for audio use.
• Our platinum grade 5654W vacuum tubes are matched at less than 3% for plate current (ip) and mutual conductance (Gm).
• We guarantee that the selected 5654W tubes for our platinum grade paired pairs test at NOS levels equal to or greater than 4500 micro-mho with a plate current of 6.6mA or higher. All tubes must also pass a specialized life test and audio sound test.
• Riverstone Audio Platinum Grade tubes are supplied with data labels indicating IP and Gm measurements.
• The amplifier can be damaged if you replace the wrong type of tube. 5654W tubes should only be used to directly replace 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W and EF95 7 pin tubes. DO NOT substiture other types of 7-pin vacuum tubes unless approved as a substitute by the manufacturer of your audio device.

Product Description As an American seller, we stand behind our products. All vintage vacuum tubes sold by Riverstone Audio are backed by our 3 year warranty. Important: Damage can occur if the wrong type of tubes is used. 5654W tubes are a direct replacement for 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W, EF95 and 403B tubes. For other replacements, check with your amplifier manufacturer. Both plate current and Gm are matched to less than 3%. The 5654W tubes were originally designed as a low noise upgrade for the 6AK5 and EF95 vacuum tubes. The designation "W" refers to heavy duty military grade tubes with better quality control and increased reliability. These vintage tubes have found new life replacing 6J1, 6J1P (6ZH1P-EV), 6AK5 and EF95 7-pin tubes and are commonly used by audiophiles for better sound quality. Upon receipt, we guarantee that the tubes will be tested at NOS levels of 4500 micro-mho or higher and a plate current (ip) of 6.6mA or higher (tested in fixed bias mode at 120V plate and screen voltage and -2.0V gate voltage). All the vacuum tubes we sell are carefully packed for shipping and have the name, logo and QC "Riverstone Audio " labels on the boxes. Legal Disclaimer 5654W tubes should ONLY be used to replace 7-Pin 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W, EF95 and 403B tubes. If in doubt, check with your amplifier manufacturer (or contact us) to verify that 5654W tubes can be used as a replacement in your particular audio device. AMPLIFIER DAMAGE CAN OCCUR IF YOU USE THE WRONG TYPE OF TUBE AS A REPLACEMENT.