B&K 4420 Reference questions

Milito
Milito Posts: 1,960
in Electronics
Ran across a B&K 4420 Reference with new CAPs and resistors. Two questions for the more knowledgeable than me. Owner is upgrading to a new Parasound amp.

1. Would it be that much of a sound improvement over my Outlaw 5000 running with my Yamaha RX-A2070 with my LSiM 705's since it's rated at 225 watts. I would run my 704 with my 2070.

2. If it would be a nice improvement what would be a good price for it?
Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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Comments

  • pitdogg2
    pitdogg2 Posts: 25,556
    I'd say yes the the b&k will have better control over the drivers. It has more peak to peak amps
    Outlaw 120@8ohms 180 @ 4

    B&k 225 at 8 350 at 4 with a 450 damping factor and 75amps peak to peak current.
    Fresh caps and resistors.



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  • Milito
    Milito Posts: 1,960
    Thanks, what do you think a good price would be for it?
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • Nightfall
    Nightfall Posts: 10,086
    edited November 2019
    I paid $300 for mine I think, stock. eBay shows $3-500 stock. So $5-700 recapped?
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
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  • rooftop59
    rooftop59 Posts: 8,121
    I wouldn’t pay over $500 with caps. Otherwise I would buy one for $300 max and buy it myself.
    Living Room 2.2: Usher BE-718 "tiny dancers"; Dual DIY Dayton audio RSS210HF-4 Subs with Dayton SPA-250 amps; Arcam SA30; Musical Fidelity A308; Sony UBP-x1000es
    Game Room 5.1.4:     Denon AVR-X4200w; Sony UBP-x700; Definitive Technology Power Monitor 900 mains, CLR-3000 center, StudioMonitor 350 surrounds, ProMonitor 800 atmos x4; Sub - Monoprice Monolith 15in THX Ultra
    Bedroom 2.1     Harmon Kardon HK3490; Bluesounds Node N130; Polk RT25i; ACI Titan Subwoofer
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  • Milito
    Milito Posts: 1,960
    Thanks for the info, BTW do B&K amps run hot as I have a closed space open at the back I would put it in with 3 or so inches open on top?
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • Nightfall
    Nightfall Posts: 10,086
    edited November 2019
    Should be fine. This is how much breathing room mine has had for the past I'm not sure how many years and I never shut it off. It runs more warm than hot.

    klak0akbavl5.jpg
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
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  • Milito
    Milito Posts: 1,960
    So if I can get it for $400.00 that would be a good deal?
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • Nightfall
    Nightfall Posts: 10,086
    Yes
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
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  • Milito
    Milito Posts: 1,960
    Thanks!
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • tonyb
    tonyb Posts: 32,981
    Can you hear it before you buy it ? I would also ask, who did the upgrades, the owner, or a shop ? A shop will usually guarantee their work, an owner...not so much. Ask if the amp is dead silent, has any audible distortion.

    I'd offer him 300 and settle on 350 if he moans.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • Milito
    Milito Posts: 1,960
    edited November 2019
    A shop did it Tony. I saw the paperwork.

    a3liteg74jcl.jpg
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • rooftop59
    rooftop59 Posts: 8,121
    Oh wow considering that amount of work $500 would be a really food deal...$600 wouldn’t be bad at all.
    Living Room 2.2: Usher BE-718 "tiny dancers"; Dual DIY Dayton audio RSS210HF-4 Subs with Dayton SPA-250 amps; Arcam SA30; Musical Fidelity A308; Sony UBP-x1000es
    Game Room 5.1.4:     Denon AVR-X4200w; Sony UBP-x700; Definitive Technology Power Monitor 900 mains, CLR-3000 center, StudioMonitor 350 surrounds, ProMonitor 800 atmos x4; Sub - Monoprice Monolith 15in THX Ultra
    Bedroom 2.1     Harmon Kardon HK3490; Bluesounds Node N130; Polk RT25i; ACI Titan Subwoofer
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  • Milito
    Milito Posts: 1,960
    edited November 2019
    Thanks again for the input. I'm going to see what he'll take for it.
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • teekay0007
    teekay0007 Posts: 2,289
    Milito wrote: »
    A shop did it Tony. I saw the paperwork.

    a3liteg74jcl.jpg
    Fake Invoice Alert! (Or just bad math?...)

    Anyone else notice that the Sub Total plus Sales Tax amounts aren’t added correctly?

    Hmmm...


    I’ve got two B&K 4420 Reference Monos that I really like. Solid amps!

    Enjoy!
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  • Milito
    Milito Posts: 1,960
    edited November 2019
    Got it for $400.00. He's going to have it hooked up so I can listen to it when I pick it up.
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • rooftop59
    rooftop59 Posts: 8,121
    Milito wrote: »
    Got it for $400.00. He's going to have it hooked up so I can listen to it when I pick it up.

    That’s awesome! Make sure to put it through its paces including off and on several times I would think...
    Living Room 2.2: Usher BE-718 "tiny dancers"; Dual DIY Dayton audio RSS210HF-4 Subs with Dayton SPA-250 amps; Arcam SA30; Musical Fidelity A308; Sony UBP-x1000es
    Game Room 5.1.4:     Denon AVR-X4200w; Sony UBP-x700; Definitive Technology Power Monitor 900 mains, CLR-3000 center, StudioMonitor 350 surrounds, ProMonitor 800 atmos x4; Sub - Monoprice Monolith 15in THX Ultra
    Bedroom 2.1     Harmon Kardon HK3490; Bluesounds Node N130; Polk RT25i; ACI Titan Subwoofer
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  • audioluvr
    audioluvr Posts: 5,601
    edited November 2019
    Looks like he only replaced the 4 output caps and at that price I'd say not with good ones. Also why replace the resistors and trannys? They almost never go bad and B&K used really good name brand ones anyway. If rebuilt right it should match Parasound IMHO. The 4420 is built like a tank
    Gustard X26 Pro DAC
    Belles 21A Pre modded with Mundorf Supreme caps
    B&K M200 Sonata monoblocks refreshed and upgraded
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)

    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus
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  • pitdogg2
    pitdogg2 Posts: 25,556
    audioluvr wrote: »
    Looks like he only replaced the 4 output caps and at that price I'd say not with good ones. Also why replace the resistors and trannys? They almost never go bad and B&K used really good name brand ones anyway. If rebuilt right it should match Parasound IMHO. The 4420 is built like a tank

    well resistors do go bad especially if the amp was driven very hard for long periods. Transistors also have their own problems and sometimes need replaced for said same reasons. Sometimes they cook themselves if the paste dries out from behind them. The amp has been bought and the OP if they have questions can verify by calling the place that did the work and ask questions they might have about the work done. I myself would have done that before I ever started the path down the road on price.
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  • Milito
    Milito Posts: 1,960
    Got it hooked up tonight. Music sounds better overall, bass, mid range and highs are more musical. Even my wife liked it better.

    Pleased with my purchase.
    Yamaha RX-A2070, Musical Fidelity M6si integrated amp, Benchmark Dac1, Bluesound NODE 2i, Audiolab 6000CDT CD Transport, Parasound Zphono USB Phono Preamp, Fluance RT85, Ortofon 2M Bronze, Polk L600's, L400, L900's, RC80i's, SVS 3000 Micro, Audioquest Interconnects and Digital Cables, Nordost Silver Shadow Digital Cable, Cullen Gold and Crossover Series Power Cables, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Signal Power Cable, Furman PL-8C 15 Power Conditioner, Sony 65" 900F, Sony UBP-X700, Fios, Apple TV 4K, Audioquest Chocolate HDMI Cables.
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  • tonyb
    tonyb Posts: 32,981
    Cool bro, rock on. For the money they are nice amps. Have one myself that I'm enjoying.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • SIHAB
    SIHAB Posts: 4,958
    Great pickup! I traded my B&K in for $500??? off a new amp.
    Wish I had it now.
    Good luck with her.
    Milito wrote: »
    Got it hooked up tonight. Music sounds better overall, bass, mid range and highs are more musical. Even my wife liked it better.

    Pleased with my purchase.

    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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