Passive preamp vs TVCs - please can you clarify ?
Posted: Mon Apr 29, 2019 4:22 pm
Now I am completely non-technical when it comes to electronic engineering but may I clarify the following when it comes to using the simplicity of an NVA passive pre compared to the apparent superiority of a passive TVC ....?
The below was extracted from the net... Thanks.
Why use a TVC versus high quality potentiometer.
Most people find that the TVC sounds significantly better than even the best potentiometer or stepped attenuator.
And it's not a subtle difference; most people report that the TVC has such an open, deep and low bass, effortless sound that they would not consider going back to a resistive device.
Exactly why they sound better is because one impedance issues mention above and the fact that the TVC doesn't attenuate by wasting energy.
The TVC is like the gear box in the car. If you need to drive at a slow steady speed which method would you choose:
(1) leave the transmission in high gear and apply the brakes to keep from going too fast, (which how a resistive device works)
(2) downshift into a lower gear that will allow the car to go the desired speed with minimum effort (which how the TVC works)
THE TVC is essentially an electronic gearbox that operates without wasting significant energy. Potentiometers and stepped attenuators adjust the signal level by literally turning the excess signal into heat. On the other hand, when A TVC is adjusted for low volume level it actually makes things easier for the source, much like a low gear makes things easy for your car engine.
The below was extracted from the net... Thanks.
Why use a TVC versus high quality potentiometer.
Most people find that the TVC sounds significantly better than even the best potentiometer or stepped attenuator.
And it's not a subtle difference; most people report that the TVC has such an open, deep and low bass, effortless sound that they would not consider going back to a resistive device.
Exactly why they sound better is because one impedance issues mention above and the fact that the TVC doesn't attenuate by wasting energy.
The TVC is like the gear box in the car. If you need to drive at a slow steady speed which method would you choose:
(1) leave the transmission in high gear and apply the brakes to keep from going too fast, (which how a resistive device works)
(2) downshift into a lower gear that will allow the car to go the desired speed with minimum effort (which how the TVC works)
THE TVC is essentially an electronic gearbox that operates without wasting significant energy. Potentiometers and stepped attenuators adjust the signal level by literally turning the excess signal into heat. On the other hand, when A TVC is adjusted for low volume level it actually makes things easier for the source, much like a low gear makes things easy for your car engine.