B&K 4420 Reference questions

MilitoMilito Posts: 631
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, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.

Comments

  • pitdogg2pitdogg2 Posts: 14,715
    I'd say yes the the b&k will have better control over the drivers. It has more peak to peak amps
    Outlaw [email protected] 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.



  • MilitoMilito Posts: 631
    Thanks, what do you think a good price would be for it?
    Yamaha RX-A2070, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • NightfallNightfall Posts: 8,505
    edited November 3
    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
  • rooftop59rooftop59 Posts: 5,975
    I wouldn’t pay over $500 with caps. Otherwise I would buy one for $300 max and buy it myself.
    HT Rig:
    Denon AVR-X4200w; Peachtree Audio NovaPre; B&K TX4430; Bryson BPD-1; Mains: Dynaudio Excite x18; Center - Polk cs400i; Heights, Center Surround - Klipsch KHC - 6 In-Ceiling; Surrounds - Monoprice in-ceiling; Sub - HSU VTF-2 MK5; LG UP870 4K BDP; NVidia ShieldTV
    ;
    Master Bedroom
    Cambridge Azur 551r; Definitive Technology SM45, NHT Super One CI surrounds, Martin Logan Dynamo (original), Squeezebox Touch
  • MilitoMilito Posts: 631
    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, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • NightfallNightfall Posts: 8,505
    edited November 3
    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
  • MilitoMilito Posts: 631
    So if I can get it for $400.00 that would be a good deal?
    Yamaha RX-A2070, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • NightfallNightfall Posts: 8,505
    Yes
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
  • MilitoMilito Posts: 631
    Thanks!
    Yamaha RX-A2070, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • tonybtonyb Posts: 31,642
    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 1430
    Tad 803 speakers
  • MilitoMilito Posts: 631
    edited November 6
    A shop did it Tony. I saw the paperwork.

    a3liteg74jcl.jpg
    Yamaha RX-A2070, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • rooftop59rooftop59 Posts: 5,975
    Oh wow considering that amount of work $500 would be a really food deal...$600 wouldn’t be bad at all.
    HT Rig:
    Denon AVR-X4200w; Peachtree Audio NovaPre; B&K TX4430; Bryson BPD-1; Mains: Dynaudio Excite x18; Center - Polk cs400i; Heights, Center Surround - Klipsch KHC - 6 In-Ceiling; Surrounds - Monoprice in-ceiling; Sub - HSU VTF-2 MK5; LG UP870 4K BDP; NVidia ShieldTV
    ;
    Master Bedroom
    Cambridge Azur 551r; Definitive Technology SM45, NHT Super One CI surrounds, Martin Logan Dynamo (original), Squeezebox Touch
  • MilitoMilito Posts: 631
    edited November 6
    Thanks again for the input. I'm going to see what he'll take for it.
    Yamaha RX-A2070, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • teekay0007teekay0007 Posts: 2,154
    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!
  • MilitoMilito Posts: 631
    edited November 6
    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, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • rooftop59rooftop59 Posts: 5,975
    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...
    HT Rig:
    Denon AVR-X4200w; Peachtree Audio NovaPre; B&K TX4430; Bryson BPD-1; Mains: Dynaudio Excite x18; Center - Polk cs400i; Heights, Center Surround - Klipsch KHC - 6 In-Ceiling; Surrounds - Monoprice in-ceiling; Sub - HSU VTF-2 MK5; LG UP870 4K BDP; NVidia ShieldTV
    ;
    Master Bedroom
    Cambridge Azur 551r; Definitive Technology SM45, NHT Super One CI surrounds, Martin Logan Dynamo (original), Squeezebox Touch
  • audioluvraudioluvr Posts: 1,379
    edited November 6
    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
    Home System:
    SDA 1C's - Full mod with the help by Dave...
    1000 Va Dreadnought- w/ WireWorld Mini-Eclipse cables
    WireWorld Mini-Eclipse 7 speaker cables
    WireWorld Silver Eclipse IC's
    Cambridge Audio Azur 851N - DAC/Streamer
    B&K Reference 50 Pre/Pro
    B&K M200 Sonata Monoblocks
    BLE-Design 16mm Power Cables
    Denon DVD 2900

    Barn system:
    SDA SRS 2.3's Full mod done by myself
    Carver C-1 pre
    Carver M1.5t
    BluDenso - Bluetooth receiver/DAC
  • pitdogg2pitdogg2 Posts: 14,715
    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.
  • MilitoMilito Posts: 631
    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, B&K 4420 Reference, HSU VTF-2 MK5, LSiM705, LSiM704, Technics PD867, Douglas Connection Alpha 12AWG OCC Speaker Cables, Douglas Connection Alpha Analog Interconnect Cables, Douglas Connection Alpha 11 OCC Custom Power Cable, Cullen Gold Power Cable, Signal Power Cables, Furman PL-8C 15 Power Conditioner, Audio-Technica AT-LP60, Sony 65" 900F, Sony UBP-X700, Fios.
  • tonybtonyb Posts: 31,642
    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 1430
    Tad 803 speakers
  • SIHABSIHAB Posts: 1,516
    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.

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