frickadella asked:
I’m not an engineer, so can someone explain why you would design an amp with multiple tubes… what does this give you in terms of power, volume, or tone control? I’ve read about tubes being paired or matched, and I would guess pairs work in series then.
Sphere: Related ContentI’m not an engineer, so can someone explain why you would design an amp with multiple tubes… what does this give you in terms of power, volume, or tone control? I’ve read about tubes being paired or matched, and I would guess pairs work in series then.
Thanks.
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It’s better to amplify a signal in multiple stages because one large gain stage usually leads to distortion. Multiple stages allow each stage to do something different. Usually an amplifier can be optimized for noise or power, but not both. So, for example, the first stage amplifies the small signal using a low noise amplifier. The (now bigger) signal then passes through one or more power amplifiers to boost the signal further. Because the signal is already larger the noise added by the power amplifiers has less of an effect on the signal and hence, less distortion.