As good as some newer models
I have restored Tek 465's, 475's, 453's and 454's. The latter two are easier to work on, thanks to the "clamshell" cabinet, which opens rapidly. The controls in the 453 and 454 are quieter, even though older. The 465 and 475 have some custom Tek IC's, whereas the 453/454 are all discretes, which may be easier to replace. If you don't need the bandwidth of the 465 ore 475, a 453 or 454 is a good choice.
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