Yaqin MC-100B Amplifiers

4.56/5 (9 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 (9 Reviews Total) | Next 15

User Reviews

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

Date Reviewed: January 30, 2015

Bottom Line:   
I never doubted that the Yaqin 100B would prove its wonderful sound after the original tubes were replaced with Gold Lions and RCA NOS tubes. Today it has been a year since I purchased and installed it and it continues to please me with its workmanship, quality and beautiful sound. This from a guy who owns Mc equipment for many years.... Kodos to the Yaqin design and mfg. team in China. Sincerely, Louis A, NYC

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Used product for:   3 Months to 1 year

Duration Product Used:   AudioPhile

Product model year:   2010



Overall Rating:5
Value Rating:5
Submitted by John Garces a AudioPhile

Date Reviewed: January 25, 2015

Bottom Line:   
Yaqin MC-100b (2013) with 4x Tung-Sol KT150, 4x electro-harmonix 6SN7EH gold pins and 2x JJ ecc803s gold pins.?
Use 4 digital multimeters to bias.? Remove 2 cage rod's for KT150.?
tone - atmosphere - transparency

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Used product for:   More than 1 year

Duration Product Used:   AudioPhile

Product model year:   2010



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




Reviews 1 - 5 (9 Reviews Total) | Next 15

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