出版商 Career Professionals

Cover for Igor S Popovich · Sound Improvement Secrets For Audiophiles: Get Better Sound Without Spending Big (Paperback Book) (2021)

Sound Improvement Secrets For Au... (2021)

Igor S Popovich

Cover for Igor S. Popovich · Loser No More! Negotiate Better and Win More Often- at Home, on the Job and in Business (Paperback Book) (2011)

Loser No More! Negotiate Better ... (2011)

Igor S. Popovich

Cover for Igor S Popovich · Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 1 (Paperback Book) (2015)

Audiophile Vacuum Tube Amplifier... (2015)

Igor S Popovich

Cover for Igor S Popovich · Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 2 (Paperback Book) (2015)

Audiophile Vacuum Tube Amplifier... (2015)

Igor S Popovich

Cover for Igor S Popovich · Audiophile Vacuum Tube Amplifiers Volume 3 (Paperback Book) (2016)

Audiophile Vacuum Tube Amplifier... (2016)

Igor S Popovich

Cover for Igor S Popovich · Tube Guitar Amplifiers Volume 1: How Tubes & Amps Work (Paperback Book) (2017)

Tube Guitar Amplifiers Volume 1:... (2017)

Igor S Popovich

Cover for Igor S Popovich · Tube Guitar Amplifiers Volume 2: How to Repair, Modify & Build Guitar Amps (Paperback Book) (2017)

Tube Guitar Amplifiers Volume 2:... (2017)

Igor S Popovich

Cover for Igor S Popovich · How to Use, Calibrate, Repair and Upgrade Vacuum Tube Testers (Paperback Book) (2017)

How to Use, Calibrate, Repair an... (2017)

Igor S Popovich

Cover for Igor S Popovich · Transformers for Tube Amplifiers: How to Design, Construct & Use Power, Output & Interstage Transformers and Chokes in Audiophile and Guitar Tube Amplifiers (Paperback Book) (2018)

Transformers for Tube Amplifiers... (2018)

Igor S Popovich

Cover for Igor S Popovich · Audio Tests & Measurements: How to Test Electronic Components, Audiophile & Guitar Amplifiers and Loudspeakers Using Modern and Vintage Test Instruments (Paperback Book) (2019)

Audio Tests & Measurements: How ... (2019)

Igor S Popovich