UKben
Auditioning
- Joined
- Jan 16, 2013
- Messages
- 14
- Real Name
- Ben dot
Phono pre-amp? Self explanatory. Cause the only "definition" of a Phono pre-amp is that it is a, uhm, well gee...a phono pre-amp.UKben said:Okay great, what does it do?
The phono cartridge in a turntable outputs a very low level signal (approx 5 mV for "moving magnet" type cartridges, and 0.5mV for "moving coil" types). This tiny signal needs to be boosted to approx 100-200mV before it can adequately drive a receiver or preamp. More important, the music on phonograph records is recorded with a form of equalization called the "RIAA Curve". This equalization (pre-emphasis) boosts the highs and reduces the low frequencies during recording. When music is played back, the reverse (de-emphasis) needs to be applied in order to return the high and low frequencies to the original levels they were at (or as close to it as possible) when the music was recorded. This de-emphasis (a.k.a., RIAA compensation) and the boosting of the tiny signal from the phono cartridge can only be performed by a phono stage. That is why you can't just plug a turntable into a DVD player and expect it to work. GlenUKben said:Okay great, what does it do?