zoso7374
Active Member
I am powering some Bowers and Wilkins 801's. Here are my choices:
Option # 1 - My current amp, a Carver M4.0. I would get the full work up from Rolland Barr which includes:
Chassis Refresh
#1 The polypropylene bypass modification will give the amplifier a more natural presentation in the midband & upper octaves
#2 The low noise opamps improve the signal to noise ratio which is a result of the IC's improved CMRR (common mode rejection ratio) you will notice smoother sound throughout the entire audio band
#3 The low ESR array improves the recovery time in the high rail +- 120 volt DC power supply, the benefit is improved control in the low end, the margins are also improved. 105C 9K9UF per rail 160WVDC
Option # 2 - (used) Bryston 4Be
Option # 3 - (brand new) Parasound 2250v2
Option # 4 - Something you guys recommend other than what I listed
Option # 1 - My current amp, a Carver M4.0. I would get the full work up from Rolland Barr which includes:
Chassis Refresh
- Repair all issues
- Touchup all poor solder
- Install all factory updates
- Replace 100% of the electrolytic capacitors / amplifier, power supply
- Completely scrub boards to remove all contamination, flux
- Replace Opto coupler
- Calibrate to factory specifications
- One year parts and labor on all work performed
- Cost $339.00 plus return shipping
- Polypropylene bypass modification $65.00 (Optional)
- Low ESR Array power supply upgrade $115.00 (Optional)
- Low noise high slew rate opamps $65.00 (Optional)
#1 The polypropylene bypass modification will give the amplifier a more natural presentation in the midband & upper octaves
#2 The low noise opamps improve the signal to noise ratio which is a result of the IC's improved CMRR (common mode rejection ratio) you will notice smoother sound throughout the entire audio band
#3 The low ESR array improves the recovery time in the high rail +- 120 volt DC power supply, the benefit is improved control in the low end, the margins are also improved. 105C 9K9UF per rail 160WVDC
Option # 2 - (used) Bryston 4Be
Option # 3 - (brand new) Parasound 2250v2
Option # 4 - Something you guys recommend other than what I listed