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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: I think I'm over active line stages posted by Thermionic27609 on August 2, 2014 at 21:36:12:
If you are using a CD player, computer audio server, Ipod, etc, then you really don't need a preamp at all. These devices are low impedance and typically put out around 2 volts of signal.
Now if you use an vintage tuner, reel-to-reel or cassette deck, you may or may not be OK. And with tube sources it depends if the output is plate driven or has a cathode follower.
A very loose rule of thumb is the newer the device, the lower it's output impedance will be. For example when the products transitioned from discrete transistor circuitry to OPAMP output drivers. But of course this is a very loose claim. There are plenty of exceptions.
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Follow Ups
- All depends on your sources. - gusser 10:50:12 08/03/14 (1)
- RE: All depends on your sources. - Tre' 12:07:14 08/03/14 (0)
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