Fifine K669B vs T669 vs K670 [Review and Comparison]
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In this article, I will compare the Fifine K669B, T669, and K670 microphones and break down the differences between them. At the end, I’ll give my verdict on which microphone is the best choice depending on your use case.
K669B vs T669
Overview
Build Quality
Performance
Verdict
Left to right: Fifine K669B, T669, K670.
Fifine K669B vs T669
K669B (left) and T669 on included desk stands.
Additional accessories in the T669.
Before I break down the specifications of each device, I’ll quickly explain the difference between the K669B and T669.
The K669B and T669 are largely the same microphone. They have the same sound and their build is almost identical. The main differences are the T669 has a detachable USB cable and it comes with additional accessories in the box including a boom arm, pop filter, shock mount, and foam cap. The K669B has a non-detachable cable and only comes with a desk stand.
Since these two mics sound the same, for the rest of this review I’ll mostly be referring to the K669B unless I’m specifically demonstrating the accessories of the T669.
Overview
| Microphone | Type | Polar Pattern | Headphone Jack | USB 2.0 Cable | Accessories |
|---|---|---|---|---|---|
| K669B | Condenser | Cardioid | No | 72 inches, non-detachable | Desk stand |
| T669 | Condenser | Cardioid | No | Type -A to Type-B. 102 inches, detachable. | Desk stand, foam cap, mic arm, pop filter, shock mount. |
| K670 | Condenser | Cardioid | Yes | Type-A to Type-B. 81 inches, detachable. | Desk stand |
K669B and T669
Fifine K669B.
T669 with foam cap, shock mount and boom arm.
The Fifine K669B and T669 are condenser USB microphones. They get up to 8 inches tall with the included desk stand. They both have a gain knob, but no headphone jack.
The K669B’s USB 2.0 cable is non-detachable and 72 inches long. The side that plugs into a PC is USB Type-A.
The T669’s USB 2.0 cable is detachable and 102 inches long. The side that plugs into the microphone is USB Type-B and the side that plugs into a PC is USB Type-A.
I bought my K669B for $35 on Amazon. It comes in black or rose red. The rose color is actually the K669 and the black version is the K669B. Here is a link to see its current price.
I bought my T669 bundle for $63 on Amazon. Here is a link to its current price.
K670
The Fifine K670 (black version is K670B) is 9.5 inches tall with its included stand. It has a gain knob and a headphone jack for monitoring your audio.
The USB 2.0 cable on the K670 is detachable and 81 inches long. The side that plugs into the microphone is USB Type-B and the side that plugs into a PC is USB Type-A.
I bought my K670 for $44 on Amazon. It comes in black or silver. Here is a link to its current price.
Build Quality
Body
The Fifine K669B and T669 have almost identical builds, but the T669’s wire is detachable making it more convenient to attach to other mic stands. Both devices are light weight, made of metal, and have black paint on the grill that chips off easily.
The K670 is slightly heavier than the K669B and is also made of metal. It lights up blue inside when connected to a computer. The body of each of these mics isn’t very different, but they are really differentiated by their stands.
Stand and mounting options
Left to right: K670, K669B, T669.
K670 light when plugged in. Shock mount is from the T669.
Desk Stand
The desk stand included with the K669B and T669 does its job of holding the mic in place, but it’s not very stable. It’s easy to tip over due to the light weight, and the legs take up a lot of space.
The K670’s stand stays in place much better and reaches a taller maximum height.
Additional mounting options and accessories
T669 with its included boom arm and pop filter.
The Fifine K669B, T669 and K670 all have 5/8th inch threading on their pivot mount which lets them be connected to boom arms and mic stands. They are all slim enough to fit into most shock mounts and they fit perfectly into the T669’s shock mount.
The T669 comes with a boom arm that can be tightened onto your desk, and all three of these mics can be screwed onto the arm. The foam cap and pop filter reduce distortion from plosives (puffs of air) very well, and the arm lets you position the mic much closer to your face than the desk stands.
Minor gripes with the T669 bundle
T669 bundle.
I highly recommend getting a mic arm set like the one included in the T669 with any of these mics to improve your recording quality. Unfortunately, I can’t recommend the T669’s stand specifically for a couple reasons:
The first issue I have is with the shock mount. The shock mount included is shaped specifically for certain Fifine microphones. The T669, K669B, and K670 can all be inserted perfectly into the T669 shock mount due to their narrow bottom and the ring that comes with each mic to screw them in. However, if you end up switching to a bigger mic or a mic from a different company, you won’t be able to utilize the shock mount at all.
The shock mount included with the T669 also has a bad pivot mount. The knob on the back doesn’t actually tighten it, so no matter how you angle it, it’s always going to droop down over time. This can be compensated for by adjusting the boom arm threading itself, but that isn’t necessary with other shock mounts.
The T669 shock mount always droops down. I wonder if I got a lemon or if they’re all like this.
Alternate angle of the T669’s drooping shock mount using the K670 mic.
Secondly, the 3/8 - 5/8 inch adapter is shaped in a way that makes it easy to accidentally screw on too tight to the threading on the boom arm or get stuck inside of your mic. There’s no grip to easily screw it off if it becomes too tight, and I needed a wrench to twist it off the boom arm right after I opened the box.
T669’s adapter stuck inside the pivot mount. feelsbadman.
These might seem like minor nitpicks, but other than these two things this boom arm is almost identical to most other $20-ish dollar boom arms on Amazon. So rather than getting the T669 for its accessories, you would probably be better off getting the K669B and a separate, cheap boom arm with all the same accessories except for the foam cap/wind guard. You’ll get a better shock mount and better shaped adapter.
Performance
K669B and K670 (right).
In this section, I’ll provide several audio examples and focus on each mic’s tone, proximity effect, plosive rejection, sibilance, background noise rejection, and music. At the end, I’ll summarize the overall sound of each mic.
Tone
As expected, the K669B and T669 sound identical in tone. The wind guard and pop filter make the T669 more viable to use up close since they make it less subject to plosives.
The Fifine K670 has a warmer, more bassy tone than the K669B. It’s not a drastic difference, and both mics sound pretty natural. Highs are exaggerated a bit too much on each mic when used up close, so sibilance can be problematic. I’ll demonstrate that shortly.
Proximity effect and distance test
The K670 has a stronger proximity effect than the K669B, but both devices have about the same low frequency drop off when used farther than about 8 inches away. This is where a mic arm is very useful - to keep the mics at an optimal distance from your mouth.
The K670 (right) is the way to go for a bit more bass.
Plosive Rejection
The Fifine K669B has about average plosive rejection compared to many popular condenser mics on the market. It still lets some pops in, but it’s mostly manageable. The T669’s foam cap and wind guard completely removed plosives from my recordings, improving the sound quite a bit.
The K670 has the worst plosive rejection. Even when using a pop filter, it distorted pretty easily.
The takeway from this is while the K670 has more of a bass response, you’ll be limited to how close to it you can speak. You can also place the mic off axis to alleviate this issue.
Sibilance
Sibilance is the sharp, high frequency sound you hear from “s” and soft “c” sounds like “seashells”. Like many other condenser microphones, the K669B and K670 are quite sensitive to those frequencies - particularly up close. This can be tamed in post-processing with a de-esser, but it can be a hassle to do so.
Background Noise Rejection
K669B inside the T669’s shock mount.
Neither the K669B nor K670 have any real background noise rejection. For this you’ll need a dynamic capsule microphone. While these two mics aren’t as sensitive to ambient noise as the Blue Yeti, they will still let in keyboard sounds, computer fans, and the like. The main difference is external bumps are registered as a lower frequency with the K670.
Keyboard noise is somewhat alleviated with the T669 since it can be placed farther away from the keys themselves. The shock mount on the T669 doesn’t stop most incidental bumps from sounding through the mic, but it does reduce the sound of bumps directly on the boom arm itself.
Music
Recording with the T669.
Recording with the K670. (wind guard is from the T669)
Song recorded: Boy Color - (Now That We’re) Strangers
These tests were done with the T669 and K670. Again, if you’re interested in the K669B’s audio performance, refer to the T669 audio sample. Both mics were used on the T669 boom arm for the music tests. Although the K670 doesn’t come with a wind guard out the box, we attached it anyway from the T669.
K670 audio monitoring
One of the features that separates the K670 from the K669B (and T669) is its headphone jack that allows for low latency audio monitoring. It does work, but the audio being sent to the headphones just isn’t good.
There’s a lot of static, there’s very little bass, and the quality is just bad overall. However, the actual audio from the microphone sounds great when you listen to it back. The low-latency monitoring will give you a false sense of what the mic sounds like. Essentially, I wouldn’t consider this a selling point for the K670.
Overall Sound
The K669B/T669 has a mostly even frequency response with a bit extra high end when used up close. The K670 is a slightly more bass heavy mic, but still has the same sibilance as the K669B. Neither device picks up quite as much detail as the ever popular Blue Yeti, but they are excellent for everyday use.
Background noise rejection is pretty non-existant on these devices, so using them with a boom arm to get them as close to the main sound source as possible is ideal.
Verdict - Fifine K669B vs K670
Left to right: K669B, T669, K670.
I recommend the Fifine K669B if you want a mostly flat frequency response mic. I recommend the K670 if you want a mic with a little more bass with a taller, more sturdy desk stand. It also has a headphone jack for audio monitoring, though its quality isn’t that great.
These mics perform best when used with a boom arm, but the T669’s accessory bundle falls a bit short. The shock mount droops, and it isn’t compatible with mics of different shapes if you decide to change mics in the future.
I’ve reviewed the Luling Arts boom arm which is basically identical but with a better shock mount. The only reason to get the T669 over a different boom arm is for the foam cap.
The Fifine K669B, T669, and K670 are all some of the best value microphones on the market. Below are Amazon links to each device.
Amazon Listings
Fifine K669B https://amzn.to/3mavQJN
Fifine T669 https://amzn.to/3uXR0yt
Fifine K670 https://amzn.to/2QoxZ9p
