Blue’s Spark SL vs Blue’s Bluebird SL 

If you are an aspiring musician and looking to create your own studio, then having a perfect microphone is a must. Today, we will review and compare two products from Blue, namely the Blue Spark SL and the Bluebird SL. If you do not know, Blue is a company that creates all that you need surrounding audio from microphones to headphones.

Blue’s Spark SL

First, let us take a look at the Blue’s Spark SL. The Blue’s Spark SL microphone is an upgrade from the original Spark series that Blue previously produced. The new Spark SL is great at recording detailed and transparent audio in more versatile ways and better sound quality. This microphone is compactly built, with refined sonics and versatile switches. The Blue’s Spark SL is priced at $199.99. Read also: Razer Seiren X vs AT2020.

When you get your Blue’s Spark SL microphone, it will arrive in a wood case, giving it a little bit of a classy feels to the microphone, on top of ease and safety of transportation. Other than that, the microphone also comes with a custom-designed shock mount. This shock mount is designed as such that it will make sure that the microphone is isolated from the rumble. This shock mount is compatible with various type of arms or stands in the market, so you do not have to worry about having to buy one from Blue to use it.

The Blue’s Spark SL is a cardioid microphone. It means the microphone is designed to receive audio from one side of the microphone. Although the microphone is designed as such that it looks like it has two heads, your voice can only be heard from the front side of the microphone. To know that it is the front side of the microphone, you just have to put the Blue logo towards you.

 Blue’s Spark SL Blue’s Bluebird SL 
Product Dimensions1.7 x 1.7 x 8.7 inches
1.9 x 1.9 x 8.8 inches
Shipping Weight11.2 ounces
14.4 ounces
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The Blue’s Spark SL microphone is a versatile microphone. You can use this microphone for various applications of audio recording, from recording of voice, acoustic and electric guitar, drums, saxophones, flutes, reeds, piano, violins, viola, cello, acoustic and electric bass, and many other musical instruments.

For the technical specification, the Blue’s Spark SL is powered with +48V phantom power. You can achieve this with a USB connection from the microphone to your recording device. The microphone has a frequency response of 20 Hz to 20 kHz. The maximum sound that it can record is quite high, which is 136 dB SPL and has a dynamic range of about 119 to 120 dB. However, this microphone has a quite big self-noise, which is valued at 16.4 dB. The Blue Spark SL is equipped with a high-pass filter and a sound pad. You can set this setting at the body of the microphone itself. The 100 Hz high-pass filter will allow you to record your audio without disturbance from low Hz audio. Meanwhile, the -20 dB pad will allow you to record audio a little bit higher than what it can actually record.

Blue’s Bluebird SL

Now, let us take a look at the Bluebird SL microphone. Just like the Blue’s Spark SL microphone, the Bluebird SL is an upgrade from the previous series of microphone, the Blue’s Bluebird series. The Bluebird SL brings more refined sonics and versatile switches to record clean and powerful audio sound. The Bluebird SL is priced at $299.99.

When you get your Blue’s Bluebird SL, you will receive it in a wooden storage box, just the same as what you will get if you buy the Spark SL. The Bluebird also receives a custom shock mount to isolate the microphone from any kind of rumble that the microphone might be affected of.

The Blue’s Bluebird SL shares many similarities with the Blue’s Spark SL in terms of physical looks, from the shape of the head of the microphone, the body of the microphone, and even the adjustment for the high-pass filter and the audio pad is on the exact spot as the one on the Spark SL. The only noticeable difference is the color scheme, as the Bluebird SL is colored blue, while the Spark SL is colored red. It also shares the same type of microphone with the Spark SL as the Bluebird SL is also a cardioid microphone.

Just like the Spark SL, the Bluebird SL is also a versatile microphone that can be used in many applications. However, there is a difference in this field compared to the Spark SL. The difference being, that the Bluebird SL is not recommended nor suitable to be used to record bass audio, be it the acoustic bass nor the electronic bass. Other than that, the Bluebird SL is capable as much as the Spark SL in recording various types of instruments.

The contrast between the Bluebird SL and the Spark SL has become apparent when we take a look into the Bluebird SL technical specification. For one, the Bluebird SL has a higher level of maximum audio that it can record, at 138 dB SPL, giving it 2 dB SPL more than what the Spark SL can record. With it, the dynamic range of the microphone is also higher, with the Bluebird SL stand at 126 dB compared to the 119 to 120 dB of the Spark SL. The Bluebird SL also has a lower self-noise generated when being used, with its stand at the level of 11 dB. However, there are also similarities in technical specifications between the Bluebird SL and the Spark SL, namely the high-pass filter and the audio pad, with both being 100 Hz for the former and -20 dB for the latter.

Blue’s Spark SL vs Blue’s Bluebird SL

- Transparent sound with superb detail and rich harmonic content
- Custom-designed cardioid condenser capsule excels at capturing your most creative moments
- High-pass filter and -20dB pad for ultimate versatility
- Works great with home studio audio interfaces
- Extended upper clarity with smooth mid frequencies for any voice or instrument
- Hand-built proprietary large-diaphragm cardioid capsule for full, open sound
- High-pass filter and -20dB pad for ultimate versatility
- Works great with home studio audio interfaces


All in all, if you are looking to record clear and crisp audio from your microphone, then I recommend the Blue’s Bluebird SL microphone. With all of the advantages over the Spark SL from maximum audio SPL, dynamic range, and low self-noise, on top of the similar accessories the will receive when buying between both products, it is no wonder that the Bluebird SL become the best choice in my eyes.