Fir Audio Thread - Discussion and Impressions

[Fliggopolis]

The B@stard has arrived

... and for those who are curious about the origin of the "Project K" name and logo (back from Bogdan's 64audio days), you might find this article from 2018 a good read

Putting Project K on burn-in, so might have something to talk about by the end of the weekend

Wow they're gorgeous. I can't wait to hear your thoughts and for mine to ship. I've been neurotically refreshing my order status every day this week.

 

[potatoguy]

The B@stard has arrived



... and for those who are curious about the origin of the "Project K" name and logo (back from Bogdan's 64audio days), you might find this article from 2018 a good read

Putting Project K on burn-in, so might have something to talk about by the end of the weekend

Beautiful faceplate! Wonder how it compares with Kr5, Project K seems to have a slightly smaller DD in the set up.

 

[Trojacked]

Has anyone got a Project K yet? Looking for more impressions.

FiR Audio Project K – Controlled Chaos, Refined Impact (vs. My Daily: Legend Evo)


So I’ve been living with the Empire Ears Legend Evo as my daily for a while now. When I say I’m used to HUGE slam, I mean Evo-level bass, chest-hammering, room-shaking, festival-grade impact. That’s my baseline.

Going into the FiR Audio Project K, I was honestly expecting to be underwhelmed at first. And yeah, the first 10 minutes? The slam felt almost too polite. Coming straight off Evo, it didn’t immediately punch me in the chest the same way.

But then I really sat with it... and that’s when it clicked.

The Slam (and the Shift in Perception)​

Project K doesn’t try to out-slam Evo. It doesn’t need to. What it does instead is hit with speed, control, and surgical precision. The slam is still very real, deep sub-bass, satisfying midbass punch, but it’s cleaner, tighter, and faster to decay. It’s like Evo brings the earthquake, but Project K brings the shockwave.

Once your ears recalibrate from the Evo’s sheer force, you start to appreciate how Project K’s bass is sculpted, not just boosted. It punches hard, then backs off instantly, no bleed, no smear. Just crisp, high-speed impact.

Mids & Treble​

Coming from Evo, the mids on Project K actually feel a touch more open and clear. Vocals are more centered and slightly more forward, with a natural tone. There’s more air in the upper mids and the treble lifts things just enough to keep the whole presentation fresh and detailed, but still non-fatiguing.

Treble is smoother than something like Odin or EXT, but has enough sparkle to complement the bass-heavy signature. Think detail without sharpness.

Technical ​

• Imaging is pinpoint accurate. You can track everything.
• Soundstage is spacious but realistic, it’s not artificially wide, just right.
• Speed and control are where it flexes the most. Transients are so clean, especially for how much bass it’s pushing.

Conclusion​

If Evo is the front row at a festival, Project K is being behind the decks, surrounded by bass, but with clarity and control. It’s more refined, more balanced, but still brings the energy when it needs to.

This is slam for grown-ups. It took a minute to register coming from the raw power of Evo, but once it settled in, I got addicted to how tight and articulate the Project K is. It doesn’t try to outmuscle Evo, it outmaneuvers it.

 

[yaps66]

FiR Audio Project K – Controlled Chaos, Refined Impact (vs. My Daily: Legend Evo)


So I’ve been living with the Empire Ears Legend Evo as my daily for a while now. When I say I’m used to HUGE slam, I mean Evo-level bass, chest-hammering, room-shaking, festival-grade impact. That’s my baseline.

Going into the FiR Audio Project K, I was honestly expecting to be underwhelmed at first. And yeah, the first 10 minutes? The slam felt almost too polite. Coming straight off Evo, it didn’t immediately punch me in the chest the same way.

But then I really sat with it... and that’s when it clicked.

The Slam (and the Shift in Perception)​

Project K doesn’t try to out-slam Evo. It doesn’t need to. What it does instead is hit with speed, control, and surgical precision. The slam is still very real, deep sub-bass, satisfying midbass punch, but it’s cleaner, tighter, and faster to decay. It’s like Evo brings the earthquake, but Project K brings the shockwave.

Once your ears recalibrate from the Evo’s sheer force, you start to appreciate how Project K’s bass is sculpted, not just boosted. It punches hard, then backs off instantly, no bleed, no smear. Just crisp, high-speed impact.

Mids & Treble​

Coming from Evo, the mids on Project K actually feel a touch more open and clear. Vocals are more centered and slightly more forward, with a natural tone. There’s more air in the upper mids and the treble lifts things just enough to keep the whole presentation fresh and detailed, but still non-fatiguing.

Treble is smoother than something like Odin or EXT, but has enough sparkle to complement the bass-heavy signature. Think detail without sharpness.

Technical ​

• Imaging is pinpoint accurate. You can track everything.
• Soundstage is spacious but realistic, it’s not artificially wide, just right.
• Speed and control are where it flexes the most. Transients are so clean, especially for how much bass it’s pushing.

Conclusion​

If Evo is the front row at a festival, Project K is being behind the decks, surrounded by bass, but with clarity and control. It’s more refined, more balanced, but still brings the energy when it needs to.

This is slam for grown-ups. It took a minute to register coming from the raw power of Evo, but once it settled in, I got addicted to how tight and articulate the Project K is. It doesn’t try to outmuscle Evo, it outmaneuvers it.

Great impressions! Project K is special for the reasons you mention. I really like it!

 

[twister6]

FiR Audio Project K – Controlled Chaos, Refined Impact (vs. My Daily: Legend Evo)


So I’ve been living with the Empire Ears Legend Evo as my daily for a while now. When I say I’m used to HUGE slam, I mean Evo-level bass, chest-hammering, room-shaking, festival-grade impact. That’s my baseline.

Going into the FiR Audio Project K, I was honestly expecting to be underwhelmed at first. And yeah, the first 10 minutes? The slam felt almost too polite. Coming straight off Evo, it didn’t immediately punch me in the chest the same way.

But then I really sat with it... and that’s when it clicked.

The Slam (and the Shift in Perception)​

Project K doesn’t try to out-slam Evo. It doesn’t need to. What it does instead is hit with speed, control, and surgical precision. The slam is still very real, deep sub-bass, satisfying midbass punch, but it’s cleaner, tighter, and faster to decay. It’s like Evo brings the earthquake, but Project K brings the shockwave.

Once your ears recalibrate from the Evo’s sheer force, you start to appreciate how Project K’s bass is sculpted, not just boosted. It punches hard, then backs off instantly, no bleed, no smear. Just crisp, high-speed impact.

Mids & Treble​

Coming from Evo, the mids on Project K actually feel a touch more open and clear. Vocals are more centered and slightly more forward, with a natural tone. There’s more air in the upper mids and the treble lifts things just enough to keep the whole presentation fresh and detailed, but still non-fatiguing.

Treble is smoother than something like Odin or EXT, but has enough sparkle to complement the bass-heavy signature. Think detail without sharpness.

Technical ​

• Imaging is pinpoint accurate. You can track everything.
• Soundstage is spacious but realistic, it’s not artificially wide, just right.
• Speed and control are where it flexes the most. Transients are so clean, especially for how much bass it’s pushing.

Conclusion​

If Evo is the front row at a festival, Project K is being behind the decks, surrounded by bass, but with clarity and control. It’s more refined, more balanced, but still brings the energy when it needs to.

This is slam for grown-ups. It took a minute to register coming from the raw power of Evo, but once it settled in, I got addicted to how tight and articulate the Project K is. It doesn’t try to outmuscle Evo, it outmaneuvers it.

May I ask where you got your Project K from? Which retailer?

The reason I'm asking is because I was informed that the unit I received doesn't have the correct final tuning, and, apparently, neither does the one that @SoundJedi has at Elise Audio store (sorry, @mvvRAZ , your impressions were based on the wrong unit, bud). That is why I didn't share any of my impressions or measurements yet. I'm waiting to receive the replacement

 

[mvvRAZ]

May I ask where you got your Project K from? Which retailer?

The reason I'm asking is because I was informed that the unit I received doesn't have the correct final tuning, and, apparently, neither does the one that @SoundJedi has at Elise Audio store (sorry, @mvvRAZ , your impressions were based on the wrong unit, bud). That is why I didn't share any of my impressions or measurements yet. I'm waiting to receive the replacement

Honestly very happy to hear that… looking forward to hearing the correct unit

 

[Scott2578]

Hows everyone doing. I just bought and received my first FIr Audio iems. I got the RN6.

I am using an Ibasso DX340 with the new amp 16. Settings are med gain, with dac low gain, and ab mode.

I wanted to see what you all recommended for the best tips and is another cable you would recommend getting the most out of these.

I am using these for edm music, but as I have my anni23 for other music, but I am thinking of possibly making these my end game iems and selling my anni 23.

Has anyone tried the Eletech Ode to Laura cable on these?

 

[AnalogueDreams]

Hows everyone doing. I just bought and received my first FIr Audio iems. I got the RN6.

I am using an Ibasso DX340 with the new amp 16. Settings are med gain, with dac low gain, and ab mode.

I wanted to see what you all recommended for the best tips and is another cable you would recommend getting the most out of these.

I am using these for edm music, but as I have my anni23 for other music, but I am thinking of possibly making these my end game iems and selling my anni 23.

You will be surprised what more hours will bring with rn6. Currently rotating between spinfit w1 and eletech baroque.

 

[Kozwoz]

You will be surprised what more hours will bring with rn6. Currently rotating between spinfit w1 and eletech baroque.

What will it bring?

 

[AnalogueDreams]

What will it bring?

Loving it more with more days using, experiencing with different source, eartips and amplification is also very fun.
with the right source rn6 can sounds warm, mellow and analogue-ish, without sacrificing the energy.
I can confidently say rn6 is one of the best all-rounder subject to my library of course.

 

[WkingAngmar]

Hows everyone doing. I just bought and received my first FIr Audio iems. I got the RN6.

I am using an Ibasso DX340 with the new amp 16. Settings are med gain, with dac low gain, and ab mode.

I wanted to see what you all recommended for the best tips and is another cable you would recommend getting the most out of these.

I am using these for edm music, but as I have my anni23 for other music, but I am thinking of possibly making these my end game iems and selling my anni 23.

Has anyone tried the Eletech Ode to Laura cable on these?

Tell me more about the Dx340/Rn6. Do those two pair well?