Have you tried to simulate this circuit?
I will wager that it is based on somebody else’s published design. (That is OK! The great majority of circuit designs start from a previous design that is known to be usable, or at least the shortcomings are well documented.) Can you share the source of your inspiration?
At the very least, the output stage is drawn incorrectly. The multiple “dots” near the R8/R9 junction suggest that the circuit may not have everything connected as you intended. I am guessing you intended the output stage to be a complementary pair, but the 2N3055 and the BD440 are far from being complementary! Did you read the first page of either device’s Data Sheet? The 2N3055 and BD440 are not even close in their ratings for collector current or power handling capability.
(I was surprised to find that the 2N3055 is still in production, and even affordable, since the device was old when I was young. The metal TO-3 package has been essentially obsolete for 20 years or more. On the other hand . . . . Like the 6L6 and 12AX7, the 2N3055 may be immortal. In 1970 the things were used in so many designs that they almost littered the galaxy. )
Or maybe you intended this to be a quasi-complementary output stage. They were popular from the late 1960’s into the 1970’s, before manufacturers learned how to make silicon PNP transistors that performed well at ratings more than a few watts. That design topology probably has more value for its nostalgia rather than a serious contender for current performance standards.
How much output power do you expect from this amplifier? The bias circuit seems to provide some rather high idling currents in the output devices, but it lacks the stabilization and temperature compensation circuitry that is essential amplifiers rated at more than a few watts. Again, simulation is a valuable tool for helping you pass the initial smoke tests.
As I mentioned back in my first response, there are other Forums and discussion groups better suited to answering questions about your circuit design. The folks at DIY Audio, and those who have built solid-state guitar amps, can probably recommend basic, proven good, circuits that are suitable for somebody learning to lay out PCB’s.