Proton AP-400PRO
No active listings are found currently. Below you will find recently expired listings.
Affiliate Disclaimer: Some listings contain affiliate links. If you make a purchase through one, it helps keep Hifishark free at no extra cost to you.
Product
Site
Price
Listed
SpringAir
Proton AP-400 Pro
SpringAir
€399
Nov 19, 2025
- Feb 2, 2026
SpringAir
€399
Nov 19, 2025 - Feb 2, 2026
Tradera
Proton dual mono pre-amplifier AP-400 Pro
Tradera
Auction bid
SEK 822 May 19, 2025
- May 25, 2025
Tradera
Auction bidSEK 822 May 19, 2025
- May 25, 2025
Blocket
Försteg från: Proton Dual Mono Pre-AMP AP-400 PRO
Blocket
SEK 1,777
29%
Nov 5, 2024
- Nov 15, 2024
Blocket
SEK 1,777
29%
Nov 5, 2024 - Nov 15, 2024
Subito
Proton Dual Mono AA-461 PRO + AP-400 PRO
Subito
€600
Nov 2, 2024
- Nov 2, 2025
Subito
€600
Nov 2, 2024 - Nov 2, 2025
Consonance.it
Pre + Finale PROTON AP-400 PRO / AA-461 PRO
Consonance.it
€500
Mar 12, 2024
- Jul 26, 2025
Consonance.it
€500
Mar 12, 2024 - Jul 26, 2025
Blocket
Försteg Proton Dual mono AP-400 Pro
Blocket
SEK 2,500
Nov 20, 2023
- Nov 21, 2023
Blocket
SEK 2,500
Nov 20, 2023 - Nov 21, 2023
Blocket
Försteg Proton Dual Mono AP-400 Pro
Blocket
SEK 2,500
Nov 15, 2023
- Nov 18, 2023
Blocket
SEK 2,500
Nov 15, 2023 - Nov 18, 2023
Kleinanzeigen
PROTON AP-400 Pro Doppel-Mono Vorverstärker NOS
Kleinanzeigen
€461
Jun 17, 2023
- Jun 30, 2023
Kleinanzeigen
€461
Jun 17, 2023 - Jun 30, 2023
willhaben.at
Proton AP 400 Pro
willhaben.at
€200
Apr 8, 2023
- May 10, 2023
willhaben.at
€200
Apr 8, 2023 - May 10, 2023
Consonance.it
Pre + Finale PROTON AP-400 PRO / AA-461 PRO
Consonance.it
€500
Feb 4, 2022
- Feb 4, 2022
Consonance.it
€500
Feb 4, 2022 - Feb 4, 2022
Finn
Kenwood L 1000 M effektforsterker og Proton Ap 400 PRO forforsterker selges.
Finn
NOK 7,000
Oct 28, 2021
- Oct 30, 2021
Finn
NOK 7,000
Oct 28, 2021 - Oct 30, 2021
Consonance.it
Pre + Finale PROTON AP-400 PRO / AA-461 PRO
Consonance.it
€500
Sep 12, 2021
- Mar 11, 2024
Consonance.it
€500
Sep 12, 2021 - Mar 11, 2024
Kleinanzeigen
Proton AA 461 Pro + Proton AP 400 Pro Vor - Endstufe NAD
Kleinanzeigen
€450
Dec 12, 2019
- Jan 3, 2020
Kleinanzeigen
€450
Dec 12, 2019 - Jan 3, 2020
Kijiji IT
Preamplificatore Proton AP 400 Pro +sintonizzatore AT 470
Kijiji IT
€120
Apr 22, 2019
- Apr 23, 2019
Kijiji IT
€120
Apr 22, 2019 - Apr 23, 2019
Tradera
Proton ap 400 pro dual mono, high end försteg
Tradera
SEK 2,800
Apr 3, 2019
- May 3, 2019
Tradera
SEK 2,800
Apr 3, 2019 - May 3, 2019
Subito
Preamply. Proton AP 400 Pro+ sint. AT 470
Subito
€100
Apr 1, 2019
- Apr 3, 2019
Subito
€100
Apr 1, 2019 - Apr 3, 2019
Bazos Slovakia
Špičkový High end predzosilňovač (NAD) Proton AP-400 pro
Bazos Slovakia
€300
Oct 22, 2017
- Nov 10, 2017
Bazos Slovakia
€300
Oct 22, 2017 - Nov 10, 2017
Ricardo
Proton AP 400 Pro Dual Mono Vorverstärke
Ricardo
CHF 279
Jun 5, 2017
- Jun 18, 2017
Ricardo
CHF 279
Jun 5, 2017 - Jun 18, 2017
Subito
Preamplificatore Proton AP-400 Pro
Subito
€400
Mar 29, 2016
- Jun 4, 2016
Subito
€400
Mar 29, 2016 - Jun 4, 2016
Subito
Preamplificatore Proton AP-400 PRO
Subito
€399
Feb 6, 2016
- Jun 4, 2016
Subito
€399
Feb 6, 2016 - Jun 4, 2016
Subito
Preamplificatore Proton AP - 400 Pro
Subito
€450
Jan 25, 2016
- Mar 22, 2016
Subito
€450
Jan 25, 2016 - Mar 22, 2016
Le Bon Coin
Pré ampli Proton AP400 PRO de 1978
Le Bon Coin
€160
Jul 22, 2015
- Jul 29, 2015
Le Bon Coin
€160
Jul 22, 2015 - Jul 29, 2015
Resources
- Add one Your favourite Proton AP-400PRO resource? » Add a link here
Discuss Proton AP-400PRO
Model Variants of Proton AP-400PRO
Maybe you are also interested in these items: