insert multiband_amplifier if needed #236

Job	Run time
Tests on paywalled platforms (macos-13-xlarge, 3.12)	1m 28s
Tests on other platforms (windows-2019, 3.10)	4m 12s
Tox test (py38)	3m 21s
Tests on other platforms (windows-2022, 3.11)	3m 35s
Tox test (py39)	3m 13s
Tests on other platforms (windows-2022, 3.12)	3m 33s
Tox test (py310)	3m 17s
Tests on other platforms (macos-12, 3.11)	3m 13s
Tox test (py311)	3m 6s
Tests on other platforms (macos-13, 3.12)	3m 50s
Tox test (py312-cover)	6m 35s
Tox test (docs, graphviz)	1m 54s
Docker image	1m 0s
PyPI packaging	0s
	42m 17s

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