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Mesa Boogie Pre Amp Kits / Mesa Bass 400+ Harma ECC83 Retro Classic Preamp Kit
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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.
All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
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 Harma Retro when used in conjunction with the extensive tonal shaping of the Mesa provides the full range of modern clean sound right through to a big warm and rounded bass sound.
The Harma Retro also removes the brittle top end characteristic by fatten and smoothing out the high end frequencies thus providing a warmer and clearer top end with more bass extension and clarity.
This set will suit the player who wants to get more of a vintage valve sound with enhanced midrange warmth.
The kit consists of 4 valves
3 Specially Selected Harma ECC83 Retro
1 Specially Selected & Balanced Harma ECC83 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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