Add the symbols for those of us that use audio tubes in our amplifier circuits. No one has this simple feature.. 9 votes Vote Vote Vote Vote We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close 1 vote 2 votes 3 votes Remove votes You have left! (?) (thinking…) Anonymous shared this idea · Jan 27, 2017 · Report…Report… · Delete… · Admin → How important is this to you? Not at all You must login first! Important You must login first! Critical You must login first! We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close under review · Jul 6, 2018 Tweet Add a comment… We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close Post comment Submitting... An error occurred while saving the comment