Mesa Boogie Pre Amp Kits / Mesa Rectoverb 50 Harma STR Standard Gain Preamp Kit
BACK
All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
This Harma ECC83 STR preamp revalve kit consists of a Standard gain set is designed to give your Mesa a tight clear well defined sound with a clean transparent top end and punchy lows.
The pre amplifier valves are specially selected for Mesa amplifiers for low microphonics and gain and the kit includes a balanced valve for the phase inverter position.
The Harma ECC83 STR is used as it has a number of advantages over other 12AX7 types such as reduced microphonics and better isolation from vibration. This is particularly useful in combo applications .The valve is very well balanced with nice even bass which has plenty of depth. The mid-range is clean and transparent which removes the mush and fizz that happens when Boogies are overdriven. When overdriven the valve produce a warm and fat sound, very rich in harmonics and which is extremely lively and expressive.
The kit consists of 5 valves
4 Specially Selected Harma ECC83 STR
1 Specially Selected & Balanced Harma ECC83 STR for V5
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
All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
The pre amplifier valves are specially selected for Mesa amplifiers for low microphonics and gain and the kit includes a balanced valve for the phase inverter position.
The Harma ECC83 STR is used as it has a number of advantages over other 12AX7 types such as reduced microphonics and better isolation from vibration. This is particularly useful in combo applications .The valve is very well balanced with nice even bass which has plenty of depth. The mid-range is clean and transparent which removes the mush and fizz that happens when Boogies are overdriven. When overdriven the valve produce a warm and fat sound, very rich in harmonics and which is extremely lively and expressive.
The kit consists of 5 valves
4 Specially Selected Harma ECC83 STR
1 Specially Selected & Balanced Harma ECC83 STR for V5
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
Comments
Specials
-
Mesa Buster Bass Harma 5881 STR Cryo Full Upgrade Kit
Special Offer 15% Discount
This Cryo full upgrade kit consists of a Harma ECC83 STR Cryo in the pre amplifier ...
£298.00£253.30 -
Mesa Bass 400+ STR 5881 Cryo Full Upgrade Kit
Special Offer 20% Discount
The Harma STR 5881 Cryo Upgrade kit is designed to give you the best balance of clean ...
£540.00£405.00 -
Marshall JCM 800 Series 2204/4104 50 watt head STR Marshall EL34B Cryo Full Upgrade Kit
Special Offer 20% Discount
The Marshall EL34B & Harma ECC83 STR Cryo Full upgrade kit is our best-selling kit as ...
£150.00£120.00 -
Fender Bassman 1959 STR Groove Tube 6L6GC GE 5U4GB Full Upgrade Kit Cryo
5U4GB Option
Special Offer 10% Discount
Until now clear note definition, musical complexity and rich ...
£198.00£178.20 - Fender 1957 Custom T£
260.00£234.00 - EL34/EL34B-REC RELIC£
24.00£21.60 - Marshall Vintage Mod£
144.00£129.60
Tweet