Also search for Heathkit 1121 or 3121, they goes to 200V 200mA [1A at 40V] and have the voltage-FET feature [but only to -9V],
so you only need a supply for the heathers [and for the screens if you want to trace pentodes] and 2 amps if you want more power and volts.
Or, you can buy a superbulky Tek 577, which goes to 1600V
[0.6A at 100V, 0.15A at 400V, 0.04A at 1600V, double the Amperes if you use the pulsed current option], or a 575 with the option for hi voltage,
and add the heathers&screens supply [for the 575, you must also add a resistor to convert current in voltage, because it dont have the FET option like the 577].
You can find the Heathkit on ebay for around 90 USD, the Tek 577 [not calibrated and probably with some work required] for around 250-300 USD.
The 575 is less costly.
The 577 give you grid voltage only to -40V, but you can bias the starting voltage so you can have more.
I use both the 577 and the 1121.
The Heathkit is nice and small, the 577 is a huge heavy beast.
If you want, I have the complete building manual of the Heathkit, and the service&operator manuals of the Tek 577.
[the 575 is on bama web site].
A nice thing of the Vacutrace is that on the manual you have the complete schematic.
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Bear in mind that the 577 has sophisticated looping compensation circuitry, while the Heathkit and the Vacutrace not.
The Vacutrace has an interesting Z-axis double trace option though.
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