Aegis Tube Compatibility

	A	B	C	D
1	Tube Type	Model	Adapter Required?	Notes
2	Rectifier	5AR4, GZ34	No	Vdrop 10V, not suitable for use with low power output tubes
3	Rectifier	5V4G, GZ32	No	Vdrop 20-25V, cautious use with low power output tubes
4	Rectifier	5U4G, 5U4GA, 5U4GB, U52, VT-244	No	Vdrop 35-50V, 3A rectifier not compatible with DIY Aegis
5	Rectifier	5R4G, 54RGY, 5R4GA, 5R4GB, 5R4WGY	No	Vdrop 45-60V
6	Rectifier	5Y3G, 5Y3GT	No	Vdrop 60V
7	Rectifier	274B (Sophia Aqua II only! See Notes)	No	Only compatible with 274B spec'd for input capacitors 22uF or greater, which includes Sophia Aqua II. For other brands, check with tube manufacturer.
8	Rectifier	5Z4, 5Z4G, 5Z4GT (Low power tubes only! See Notes)	No	Only to be used with low power tubes (e.g., 6V6, EL84, EL33) due to low Vdrop 20ohms and max DC output current 125mA
9	Input	6SL7GT, 6SL7WGT, 6SU7GTY, 6113, 5691, CV1984, CV1985, VT-229, 6N9C, ECC35	No	Preferred input tube, 6SL7 and equivalents
10	Input	7F7	Yes	6SL7 type with loctal base
11	Input	6SC7, 6SC7GT	Yes	Predecessor to the 6SL7
12	Input	12AY7	Yes	Lower gain than 6SL7, lower peak power output
13	Input	12AT7	Yes	Lower gain than 6SL7, lower peak power output
14	Input	12AX7	Yes	Higher plate resistance than 6SL7, may negatively impact frequency response
15	Input	6F8G	Yes	Lower gain than 6SL7, lower peak power output
16	Output	EL34, 6CA7	No
17	Output	KT77	No
18	Output	6L6, 6L6G, 6L6GC, 6L6GA, 6L6GB, 6L6WGB, 6P3P, 6L6WGB, KT66, 5881	No
19	Output	KT8C, CV1079	Yes	Requires adapter with anode cap lead, high voltage on anode cap
20	Output	6V6, 6V6G, 6V6GT	No	Only use with high Vdrop rectifiers > 30V
21	Output	6AQ5, EL90, 6005	Yes	Miniature 6V6 equivalent, only use with high Vdrop rectifiers > 30V
22	Output	6F6, 6F6G, 6F6MG, KT63	No	Only use with high Vdrop rectifiers > 30V
23	Output	EL84, 6BQ5	Yes
24	Output	KT88, KT90, 6550	No
25	Output	EL156	Yes
26	Output	EL11	Yes	Only use with Vdrop rectifiers > 10V (i.e., not 5AR4, GZ34)
27	Output	EL3N	Yes	Only use with Vdrop rectifiers > 10V (i.e., not 5AR4, GZ34)
28	Output	EL33, 6M6G	No	Only use with Vdrop rectifiers > 10V (i.e., not 5AR4, GZ34)
29	Output	EL37	No
30	Output	EL38	Yes	Requires adapter with anode cap lead, high voltage on anode cap
31	Output	EL39	Yes	Requires adapter with anode cap lead, high voltage on anode cap
32	Output	EL51	Yes	Requires adapter with anode cap lead, high voltage on anode cap
33	Output	4654	Yes	Requires adapter with anode cap lead, high voltage on anode cap
34	Output	807, VT60	Yes	Requires adapter with anode cap lead, high voltage on anode cap
35	Output	6889	Yes	Requires adapter with anode cap lead, high voltage on anode cap. Do not use with rectifiers spec'd for 120mA max DC current (e.g., 5Y3, 5Z4).
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