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National / 6414-NATIONAL USA
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All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
A test report is available click here to view
All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
A test report is available click here to view
This is high grade valve was selected for computer circuits and was used extensively by IBM and the American Military.
The 6414 was only made in the USA and has a 10,000 hour heater rating. The 6414 Raytheon was selected as the factory of choice by National Electronics USA as It is a more ruggedly built, offers long life rating and is made to full military specifications.
This valve is used by Manley Labs in a number of its studio products such as Voxbox, Massive Passive, ELOP, Mono and Dual Mono mic pre, SLAM, and Pultec EQ. Manley also use the 6414 in audio products such as Stingray amps and MAHI monoblock.
This valve is used by many of our professional studio customers using Manley equipment. This item is very now hard to find and this is possible the last time we will find this item in any quantity in pristine condition.
The valves come in the original National Red box with the 6414 made in the USA printed on the glass.
We offer two options:
1) Factory tested
2) Balanced -matched triode sections for use in Manley labs equipment such as Voxbox, Massive Passive, ELOP, Mono and Dual Mono mic pre, SLAM, and Pultec EQ.
If you require Multiple items matched then you will need to let us know when you order
All Balanced preamp valves are Dynamically Drive tested under real working condition and are matched on dB gain. They also have passed the following tests:
Gain (db) Drive Tested
Transconductance (gm) Drive Tested
Output Drive Tested
Noise 1 (signal to noise)
Noise 2 (Aural)
Microphonics Test 1(Ambient)
Microphonic Test 2 (Shock)
Cathode Test
Grid Leakage Test
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