REAL AKG C451B VS CHINA451B

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

soony

Member
Joined
Jan 1, 2024
Messages
6
Location
south korea
I haven't lived in an English-speaking country, and my proficiency in English may not be accurate, so expressions could be awkward. Please bear with me.

While searching to purchase the AKG C451B, I came across a clever Chrome browser that, based on collected cookie data, displayed a FAKE version of the C451B through Google ads. Driven by curiosity, I clicked on the ad, only to be faced with a product that unmistakably screamed, "I am fake," as it was boldly black, in stark contrast to the genuine C451B finished in Satin Nickel, as shown in the photos.

Although AliExpress has all sorts of items, including clones of brands like Sennheiser, Shure, Samson, and Audio-Technica, as well as entire product lines imitating Neumann, such as TLM or U87 AI clones, I've mainly been interested in SDC (Small Diaphragm Condenser) microphones typically classified as pencil mics. However, the FAKE C451B captured my attention, and the price of around 180 euros per pair (plus an additional 18 euros for customs!) made it a luxury to purchase based solely on curiosity. The seller operated a very small online store with a cumulative sales volume of fewer than 100 items. When I requested circuit diagrams in our conversation, the seller couldn't provide them or take photos of the circuit. Still, they claimed the product was a one-to-one match and cautioned that the circuit diagram might not be 100% accurate. Despite the hesitations, enticed by claims of remarkable performance, I decided to make the purchase as a New Year's luck test.

Although the distance from China to Korea is relatively short (overland or train trade is not possible, thanks to the pig blocking the way, lol), it mainly relies on sea freight. The seller's item took approximately 2 days to reach the port, half a day for the ship to travel from the Chinese port to the Korean port, 2 days for customs clearance procedures, and another day from customs departure to reaching my home. In total, it took about 6 days to receive the product.

Upon receiving the product and opening the housing, I was astonished. The circuit of this Chinese replica perfectly matched the circuit I had seen in the technical manual of the AKG C451B. Even though circuit board photos of the C451B model couldn't be found anywhere online, the circuit diagram was attached to the technical manual, and I had checked it beforehand. To make a comparison, I immediately purchased one genuine C451B through the official distribution channel that had received certification. Since Korea is a small country, ordering before midnight meant receiving the item by the next day's lunch.

As soon as I received the genuine C451B, I opened it up and discovered that it provided individual frequency measurement values. It was akin to purchasing high-end LG or Dell monitors that come with individual calibration test measurements. As it was my first purchase of a high-end microphone, I was quite amazed. In Korea, the C451B costs around 440 euros. Thomann sells it for 289 euros. Interestingly, on U.S. sites like Sweetwater, it goes for around 600 euros.

On the other hand, among non-domestic microphones of a similar grade, Shure's KSM141 is priced at 409 euros on Sweetwater, 366 euros in Korea, and 493 euros on Thomann. Anyway, getting back to the main point, when I opened up the genuine C451B's housing to reveal the circuit board, I was surprised to see it closely resembling the CHINA451B.

Feeling a pang of conscience, I ordered one more genuine C451B to pair with the original. Well... I don't have much time, so I couldn't do precise recording tests, but I did a rough test with the ambient noise at home. The comparison is between Lauten Audio's LA-120 and CHINA451B. I plan to do a recording comparison between the genuine C451B and the Chinese replica either tomorrow or over the weekend.

Honestly, it's scary. A few years ago, semiconductors like displays and NAND memory were the best products produced by the manufacturing country I live in. However, now Chinese-made LCDs and NAND memory are growing scarily, with China already excelling in making LCDs, and soon they might become the best in producing NAND memory and OLED displays. In the same context, it's not impossible that China might produce very high-quality microphones or speakers. Even for us Koreans, until recently, Chinese-made LCDs were treated as cheap knockoffs, but now many models of LG monitors use Chinese-made LCDs. As for microphones, is today's Chinese copycat a mere copycat, or will it be seen in broadcasting stations or studios the day after tomorrow? Surprisingly, just 20 years ago, Samsung and LG monitors were treated as cheap in the global market, and Japan Display was known for professional use. However, not long ago, all the advanced monitors' LCDs, such as those from Eizo, Dell, and others, changed to LG. Although Samsung acquired Harman Kardon and practically became AKG's parent company, even in Korea, Samsung service centers don't handle AKG products. Distribution networks, repair networks, and services are all handled by small-scale distributors. Interestingly, even in wireless earphone cases like the Buds series, "sound by AKG" is engraved.

Anyway, Chinese products: The rise of products like Edifier in speakers or TAKSTAR in microphones has positive aspects, allowing for high quality at a low price. However, the frightening part is the disappearance of the genuine article.


Of course, the recording was a bit off. It's challenging to compare an upright piano with old background noise in an acoustically challenging environment.
Can you guess which one is the LAUTEN between TEST1 and TEST2?
 

Attachments

  • KakaoTalk_20240106_191102751.png
    KakaoTalk_20240106_191102751.png
    204.2 KB · Views: 2
  • KakaoTalk_20240106_191120530.png
    KakaoTalk_20240106_191120530.png
    167.1 KB · Views: 2
  • KakaoTalk_20240108_185857403_01.jpg
    KakaoTalk_20240108_185857403_01.jpg
    2.4 MB · Views: 2
  • selection.mp4
    4.7 MB
  • ㅇㅁㅇ.jpg
    ㅇㅁㅇ.jpg
    2.5 MB · Views: 2
Certainly, there are differences in physical components like screws and springs. The capsules are naturally different, and upon closer inspection of the main body, neither the C451B nor its clones appear to have a DC-biased transformerless output capacitor microphone circuit. In other words, they are both ECM (Electret Condenser Microphone) types, suggesting that the two capsules should be compatible.

I have already confirmed instances where the capsule of the C451B was successfully used in NEEWER NW-410 and Behringer C-2 models through research. The microphones operated normally. (Source: ameblo.jp) Even if you don't understand Japanese, you can scroll to view pictures that confirm the replacement of the capsule.
 

Attachments

  • KakaoTalk_20240112_090021945_04.jpg
    KakaoTalk_20240112_090021945_04.jpg
    2.2 MB · Views: 0
  • KakaoTalk_20240112_090021945_01.jpg
    KakaoTalk_20240112_090021945_01.jpg
    2.4 MB · Views: 0
Last edited:
I just stumble uppon this microphone pair today and was wondering if it was better sounding than the usual Alctron T02A / MXL 604.
 
Last edited:
I plan to do a recording comparison between the genuine C451B and the Chinese replica either tomorrow or over the weekend.

Of course, the recording was a bit off. It's challenging to compare an upright piano with old background noise in an acoustically challenging environment.
Can you guess which one is the LAUTEN between TEST1 and TEST2?
Which is the Lauten? I would guess the brighter test is the clone. Did you get a chance to test it against the genuine c451b?
 
Which is the Lauten? I would guess the brighter test is the clone. Did you get a chance to test it against the genuine c451b?

I don't remember well right now, but I think TEST1 was probably a Lauten La-120. When I wrote this post, I think I did some comparison recordings as a pair over the weekend, but I couldn't upload them. I was too busy and forgot about it. I'll try to compare them tomorrow. Also, I don't recommend this Chinese knock-off. The circuit is identical, but the electret capsule is different, so the noise level seems to be high.
 
AKG는 더 이상 존재하지 않습니다.

그것은 단지 소유자가 운영하는 브랜드일 뿐입니다. 생산은 중국에서 이루어집니다.
AKG still exists, though it's not as severe as Crown. While the Vienna office (essentially the core of AKG) has been closed, they still manufacture microphones like the C414 and C451B at the new factory in Pécs, Hungary. The Chinese production plant is a story more than 20 years old. However, under the Samsung-Harman group, the focus is no longer on traditional audio equipment. You can see this with products like Layr and Ara.
 
Which is the Lauten? I would guess the brighter test is the clone. Did you get a chance to test it against the genuine c451b?
It's just an excuse, but playing the piano after half a year makes me feel dizzy. I'm sorry that my performance skills are not good. This is a 451b pair test. The answers are in the text file. I'll also attach each audio file."
 

Attachments

  • chinachina_bach_prelude.mp3
    8 MB
  • answer sheet.txt
    49 bytes · Views: 1
  • KakaoTalk_20240616_230208949.png
    KakaoTalk_20240616_230208949.png
    1.7 MB · Views: 1
  • KakaoTalk_20240616_230249765.png
    KakaoTalk_20240616_230249765.png
    1.6 MB · Views: 1
  • KakaoTalk_20240616_230324961.png
    KakaoTalk_20240616_230324961.png
    1.9 MB · Views: 1
  • KakaoTalk_20240616_230513421.png
    KakaoTalk_20240616_230513421.png
    1.6 MB · Views: 1
  • KakaoTalk_20240616_231158269.png
    KakaoTalk_20240616_231158269.png
    2.6 MB · Views: 1
  • original_akg_bach_prelude.mp3
    8 MB
  • ab test.mp4
    11.3 MB
Wow, thanx group diy for the opportunity to exchange experiences with a colleague from as far away as Korea! And thank you, Soony, for your detailed description!

When I looked at your pics of the interiour, i thought ... well ... if that was a C541, that I saw in soonys pics, what the heck do I own? It doesn´t have anything in common with my (admittedly VERY old) C451 CB. Soony, I´m really curious, what the "real" AKG looks like inside! Could it be, that it is just as far away from my old one, as it is from the chinese rip-off?
Anyway: with mine, the pcb is not soldered directly to the output pins, mine has got a output transformer, mine provides polarizing voltage ... How on earth can an electret mic with a transformerless amp bear the same name???

Could that be, because a C451 still is a money spinner?
And might that as well aply for the name AKG? ... or Neumann? ... or Telefunken?

When I read that Telefunken hab been dissolved in 1967 - my year of birth by the way - I thought: If that was true, how could they come up with the M15 tape machine in 1972, that has been my faithful tool for the last 30 years???
Well, the answer ist: the comany had been dissolved, but tape recorder production (and the brand name with it) went back to AEG, one of the two founding companies of Telefunken.

(By the way: Telefunken had been founded in 1903 as a joint venture by AEG and Siemens by a command of the German Kaiser Wilhelm II, in order to "invent" a wireless system that could rival that of Marconi in Great Britain. I put inverted commas around "invent" because it was really a case of blatant espionage. Without such a wireless system Germany could never have started WW I. So it is no exaggeration if I say, the sole reason for founding Telefunken was war efforts ... Some things never change, do they?)

When after a dissolution of a company you can still make money by selling the licence to use the name ... Well, why wouldn´t you?
So my theory is, Harman bought AKG to cash in on the name, Sennheiser bought Neumann, to cash in on the name, some Americans bought the name of Telefunken Elektroakustik to cash in on the name.
And Chinese companies cash in by stealing the names.

best wishes from Bremen,
Wulf
 

Attachments

  • IMG_1041.JPG
    IMG_1041.JPG
    104.2 KB · Views: 2

Latest posts

Back
Top