Zaikesman what were your results trying to transfer to CD-R without a filter? Are the warps so great that they use up all of the A/D's headroom? I've read that records can be de-warped by clamping the disc between two non-heat conductive surfaces and placing them in an oven at a low heat setting. Maybe someone will comment on this further.
I am currently transferring a large part of my vinyl collection to a digital format and I've come to the conclusion that for bad quality discs that computer-based DSP processing is essential. A record cleaning is the first step. Then once in the digital domain low-cut filters can remove rumble, gain can be altered as needed, pop/clicks and broadband noise can also be removed. All of this can be done relatively transparently. I use t.c. works Spark XL (Mac).
I am currently transferring a large part of my vinyl collection to a digital format and I've come to the conclusion that for bad quality discs that computer-based DSP processing is essential. A record cleaning is the first step. Then once in the digital domain low-cut filters can remove rumble, gain can be altered as needed, pop/clicks and broadband noise can also be removed. All of this can be done relatively transparently. I use t.c. works Spark XL (Mac).