Yaqin MC-100B Amplifiers

4.43/5 (7 Reviews)


Product Description

  • Output power: 30W×2 (8O) Triode (TR) connection
  • Frequency response: 5Hz~80KHz (-2dB)
  • Signal noise ratio: =90dB (A)
  • Input sensitivity:packed mode: 0.25V Pro mode: 0.6V


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Reviews 1 - 5 (7 Reviews Total) | Next 15

User Reviews

Overall Rating:4
Value Rating:5
Submitted by Gonzalo a AudioPhile

Date Reviewed: May 14, 2013

Bottom Line:   
I purchased this amp online on a recommendation from a musician friend, as he is also an audiophile.
I enjoyed this amp for 4 years recently sold to another friend, very quickly (after blowing up power tubes going cherry red ) realize the right voltage to run this amp is around 94Volts bringing it down from a Variac transformer (10 Amp) it sounded absolutelty amazing.
using NOS TungSol 6550 circa 1963 to 1965 ( 3 quads in stash) it sounded amazing!!!
for 6SN7 i preferred the Ken Rads or RCA Gray Glass but I also used a pair of TungSol black glass it's just they cost more than the amp itself . . .
for the input tubes I used for best results Sylvania 5751 black plates triple mica's best sounding of the bunch including the Telefunken ECC83 and the mighty RCA's and GE's
I used it as an amp feeding ofmr front connectors direct from impedance adjusted (corner frequency to 47K input on the Yaqin) very modifierd Audible Illusions preamp. this amp really sings with this combination.
i also found better (MUCH BETTER) sounding in triode strapped mode (TR)
many things to be said about this amp, maybe quality of materials was nto as great as some of the Europe's and US's best but for the price never anything come as close to a very good amp for a very small fraction of the cost.
Well recommended,
READ THE MANUAL!!!! adjust the bias on teh power tubes regularly (every 4 to 6 months if good tubes)
it's a keeper,
the only thing with more soul is a 45 or a 300B Japanese high end amp that cost probably 10 times this one (used) . . .

Enjoy the music;

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Used product for:   More than 1 year

Duration Product Used:   AudioPhile

Product model year:   2008



Overall Rating:5
Value Rating:5
Submitted by John195 a AudioPhile

Date Reviewed: February 16, 2013

Bottom Line:   
Hi,
I love the sound my Yaqin MC100B, I removed all china made tubes and put in 4 Tung-Sol Kt120 (set bias with 4 cheap multimeters to 0.55mV), 4 Electro-Harmonix 6SN7EH gold pins and 2 JJ Electronic ECC803 S gold pins tubes.

I also love the sound and have Yaqin SD-30A tube fidelity output CD player, I also removed china tubes and replace with 2 JJ Electronic ECC81 gold pin tubes.

I get all my tubes from Yen Audio in USA and use tube dampers on Amp.

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Used product for:   More than 1 year

Duration Product Used:   AudioPhile

Product model year:   2010



Overall Rating:3
Value Rating:3
Submitted by Franko a Audio Enthusiast

Date Reviewed: September 27, 2012

Bottom Line:   
Meine Meinung über Yaqin MC 100B,PRO :Preis/Leistungsverhältnis bis -450 Euro ist OK ..Trafos+Übertrager sind auch OK,ausreichend dymensioniert .
Kontra: Wer das Gerät vor dem Kauf nicht probehören kann sollte die finger davon lassen ,Weil:
Klanglich nicht wirklich überzeugend ,spielt nicht auf den Punkt .Hauptproblem ist der stark unterkühlte diffuse Mitteltonbereich ,Höhen und Tiefen sind OK-GUT ,die Mitteltonschwäche ist auf die Übertrager ,aber auch auf die Schaltung zurückzuführen .Es hilft hier auch keine Schaltungsanpassung .
Der Schaltungsbedingte geforderte hohe Ruhestrom von 65 mA je KT-88 machen das Gerät zum Endröhrengrab .
KURZUM: Die Schaltung ist nicht ausgereift ,die Übertrager (RAA ca. 2,8 KOhm )haben Ihre Stärken und Schwächen,mich konnte das Gerät nicht überzeugen,habe Glücklicherweise nur 460 Euro incl. Zoll+Co bezahlt .

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Used product for:   3 Months to 1 year

Duration Product Used:   Audio Enthusiast

Product model year:   2010



Overall Rating:5
Value Rating:5
Submitted by grayfair0 a Audio Enthusiast

Date Reviewed: July 22, 2012

Bottom Line:   
i bought this amplifier last november secondhand. the tubes needed replacing. after a vast amount of tube rolling on all tubes i came to this selection that works amazingly well together.....

shuguang black treasure kt88-z x 4
brimar 6sn7gty brown base x 2 in v2 and v3
rca grey glass vt231 x 2 in v1 and v4
golden dragon 12ax7-t x 2

the sound from this amplifier is nothing short of stunning. the rest of my system is....

musical fidelity nuvista 3d cd player
quad 21L2 speakers
chord company anthem 2 interconnects
chord company epic twn speaker cables x 4

the whole system works as a synergy and i`d gladly put it up against any high end hifi out there. the soundstage in front of me is totally holographic and as real as things get. deep and wide too! bass is gloriously deep. textured and warm. the mids are to die for making both male and female singers voices textured and clear. voices sounds like it`s coming from their throats rather from their mouths. the highs go high! not bright at all just sooooo open! the big plus too which i feel is the icing on a very good cake is the ability to play anything you throw at it. i`ve played everything from nirvana to holst planets and no one or nothing can wipe the smile off my face. for me it gives a sense of euphoria everytime i listen and always feel satisfied.

i heard this amplifier with it`s standard chinese tubes and although they needed replacing (noisy) the amp still sounded very good although i do agree a touch on the shrill side. tube rolling certainly has put this amplifier into a very different league and i definately agree, the well established big boy amplifiers of the world have a cheaper, prettier, very well built and flexible, upgradable problem to deal with!!!

i hate to think how much i`d have to pay out to better the sound of this amazing amplifier

Expand full review >>

Used product for:   3 Months to 1 year

Duration Product Used:   Audio Enthusiast

Product model year:   2009



Overall Rating:5
Value Rating:5
Submitted by Charlie Brown a Audio Enthusiast

Date Reviewed: July 22, 2012

Bottom Line:   

Simply put, a stunning amplifier for the price, period!

It must give 'high end' valve amplifier manufacturers, nightmares.. Beware the likes of Audio Research, Mc Intosh and Pima Luna.. There's a new kid in town..

It's quite amazing how the Chinese makers of this beautiful machine, offer it at this price! The quality of both, the workmanship and the sound are exemplary and the attention to detail is excellent.

I have been in audio for many years and, quite honestly, I cannot remember a product of such quality, ANYWHERE NEAR near this price.

Well done Yaqin! Thanks for making an audiophile quality amplifier accessible to people that, in the past, could only dream of such quality.

Unconditionally recommended!

Expand full review >>

Used product for:   3 Months to 1 year

Duration Product Used:   Audio Enthusiast

Product model year:   2010




Reviews 1 - 5 (7 Reviews Total) | Next 15

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