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* [[Media:070-1582-00.pdf | AM502 Instruction Manual 070-1582-00]] | * [[Media:070-1582-00.pdf | AM502 Instruction Manual 070-1582-00]] | ||
* [[Media:070-1582-01.pdf | AM502 Instruction Manual 070-1582-01]] | * [[Media:070-1582-01.pdf | AM502 Instruction Manual 070-1582-01]] | ||
* [[Media:050-0844-03.pdf | AM502 Main Circuit Board Replacement Mod]] | |||
}} | }} | ||
The differential amplifier design is a variant of the [[1A7A]] circuit, also used with modifications in the [[3A9]], [[7A22]], [[5A22N]], and [[5030]]/[[5031]] ([[26A2]] too?). | The differential amplifier design is a variant of the [[1A7A]] circuit, also used with modifications in the [[3A9]], [[7A22]], [[5A22N]], and [[5030]]/[[5031]] ([[26A2]] too?). |