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

Ampeg SVT VR Harma ECC83 Retro Classic Preamp Upgrade Kit Ampeg SVT VR 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 Vintage Reissue Classic Retro Full Upgrade kit is designed to give your SVT Vintage Reissue head the sound of the original SVT. The ECC83 Retro has 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 with enhanced midrange warmth.

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 Vintage Reissue pre amp circuit can be used to get the full range of vintage ampeg sounds right through to a modern clean sound all with that big warm and growling 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 8 valves

4 Specially selected Harma ECC83 Retro
4 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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