Roger's Pre-Amplifier projects
Designed by Roger Knopp, M.Sc.E.E
knopp.electronics@iname.com
phone/fax: +46 31 252345











KE83-92C, Roger's Pre-Amplifier Mk III











KE83-92B, Roger's Pre-Amplifier Mk II











KE83-92A, My First Pre-Amplifier

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KE83-92C, Roger's Pre-Amplifier MK III
KE83-92B, Roger's Pre-Amplifier Mk II
KE83-92A, Roger's Pre-Amplifier Mk I
KEW/CA-00A, Roger's Advanced Digital 0dB Controller