Abstract: Various examples are directed to analog vacuum tube emulator circuits. In various examples, a vacuum tube emulator circuit may comprise a first circuit and a second circuit. The first circuit may be effective to receive, a first voltage, a second voltage, and a third voltage. The first circuit may be effective to develop, at an input of the first circuit, a first current based on the first voltage, the second voltage, and the third voltage. The first circuit may output the first current to an output node. The second circuit may be effective to receive the first voltage, the second voltage, and the third voltage. The second circuit may be effective to develop, at an input of the second circuit, a second current based on the first voltage, the second voltage, and the third voltage. The second circuit may output the second current to the output node.