Ampeg Pre Amp Kits / Ampeg SVT 3 Pro Harma ECC83 Retro Classic Preamp Upgrade Kit

Ampeg SVT 3 Pro Harma ECC83 Retro Classic Preamp Upgrade Kit Ampeg SVT 3 Pro Harma ECC83 Retro Classic Preamp Upgrade Kit Click on image(s) above to view larger

All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.

These Ampeg pre amp revalve kits are put together to provide a sonic upgrade over the stock valves in your Ampeg. I own and have played over the past 30 years Ampeg SVT, Original V4B and for recording the B15-N portaflex. I have also used many of the Ampeg valve pre amps.So these kits use the best of New Old Stock valves and modern day production items to give you the best sound out of these lengendary bass amps.
Ampeg SVT 3 Pro Classic Retro Pre amp kit is designed to give your SVT 3 Pro a clean sound but with more emphasis on the midrange. This set will suit the player who wants to get more of a vintage valve sound that you can normally only get when using an all valve bass amp.

The Harma ECC83 Retros main feature is its smooth linear midrange and extended low frequency response so you get smooth warm mids with tight fat punchy lows.
The valve when used in conjunction with the extensive tonal shaping of the SVT 3 pro can be used to get the full range of modern clean sound right through to a big warm and rounded bass sound.

The Harma ECC82 Retro improves the amplifier as it has a clean and punchy response and adds fatness and midrange warmth to the Ampeg Sound. The linear midrange response which produces the added fatness and depth to the sound allows the player to use the extensive mid shape controls on the Ampeg. This allows you to access all those Classic Funk and Rock sounds easily at your fingertips. This valve kit will suit the bass player who wants a classic Ampeg rock sound with plenty of tonal flexibility.

The kit consists of 5 valves

4 Specially selected Harma ECC83 Retro
1 Specially selected Harma ECC82 Retro

Please note that this kit is for the valves only

All Harma preamp valves are Dynamically Drive tested under real working condition 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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