Klipsch The Nines vs Kali Audio IN-8 V2

Short answer: the Kali Audio IN-8 V2. It ranks #11 of 61 powered bookshelf speakers by sound quality at $499; the Klipsch The Nines ranks #30 and costs $999.99, so there is not much of a tradeoff to weigh.

What the Klipsch The Nines offers: Erin calls these his favorite Klipsch speaker he has heard. With the tweeter trim set to -2dB, the listening-window response stays within roughly +/-1.5dB from 40Hz to just above 10kHz, and they produced genuinely powerful bass that reached about 30Hz in his room. The 8-inch woofer remains below 3% THD from 30Hz upward at 96dB/1m; compression is well controlled through about 90dB, and its limiter was not a concern at realistic listening levels. Exceptional all-in-one connectivity includes HDMI ARC, phono, USB, optical, Bluetooth, analog inputs and a subwoofer output; the Klipsch Connect app supplies useful bass/mid/treble adjustment. Watch for: The app’s flat setting leaves the treble elevated, and Erin preferred a -2dB tweeter trim. There is a likely tweeter/waveguide breakup feature around 16kHz, though he did not hear it. Horizontal coverage is narrow (about +/-30 degrees), prioritizing a focused image over room involvement; listeners who prefer a wider soundstage may not like that trade-off. Ear height matters: he recommends the reference plane between woofer and tweeter rather than directly on tweeter axis. The speaker begins limiting above roughly 90dB/1m, and the two cabinets still require a physical inter-speaker cable.

What the Kali Audio IN-8 V2 offers: Three-way coaxial (coincident) driver in a front-ported cabinet, allowing near-wall placement without port noise issues; extensive dip switches handle boundary compensation, plus XLR/TRS/RCA inputs and a gain-matching volume knob. A built-in limiter makes it essentially impossible to push into mechanical distress - no cabinet buzzing, woofer bottoming, or audible failure even driven hard to 80-95dB in testing. Distortion stays below 1% THD at 86dB and under 3% at 96dB, largely thanks to that limiter. Frequency response and dynamic behavior stay essentially unchanged from 76dB up to 96dB/1m before the limiter engages around 96-102dB. Bass extends smoothly to about 50Hz. A clear step up in linearity over the original V1 version both on-axis and in estimated in-room response, and eliminates the hiss that drew complaints on the V1. Excellent soundstage depth, a benefit typical of coaxial designs, at $800/pair. Watch for: Notable forwardness/brashness in the 4-5kHz range when listened to on-axis, needing about 10° of toe-out (Kali’s own recommendation for the coaxial design) plus some EQ to fully resolve. A dip near the tweeter/voice-coil transition, likely a cancellation effect from the coincident driver’s geometry, is also improved by toeing off-axis. Bass rolls off below about 50Hz, so heavy low-bass material still needs a subwoofer. A minor resonance around 160Hz occasionally made low vocals sound a bit “hot,” though the reviewer rates it minor (about 2/10 in severity). Horizontal soundstage is narrower than non-coaxial alternatives, a typical trade-off of coincident driver designs. Vertical placement tolerance is fairly tight - usable to about ±10°, degrading past ±20°. Designed as a near/midfield monitor for roughly 1-3m listening distances, not intended as a home-theater speaker.

Buy the Kali Audio IN-8 V2. It ranks higher for sound quality than the Klipsch The Nines and costs less, so there is no real case for the other one.

Specifications Side By Side

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The Two Speakers In Full

Klipsch The Nines: $999.99 Crutchfield eBay

Pros: Erin calls these his favorite Klipsch speaker he has heard. With the tweeter trim set to -2dB, the listening-window response stays within roughly +/-1.5dB from 40Hz to just above 10kHz, and they produced genuinely powerful bass that reached about 30Hz in his room. The 8-inch woofer remains below 3% THD from 30Hz upward at 96dB/1m; compression is well controlled through about 90dB, and its limiter was not a concern at realistic listening levels. Exceptional all-in-one connectivity includes HDMI ARC, phono, USB, optical, Bluetooth, analog inputs and a subwoofer output; the Klipsch Connect app supplies useful bass/mid/treble adjustment.

Cons: The app’s flat setting leaves the treble elevated, and Erin preferred a -2dB tweeter trim. There is a likely tweeter/waveguide breakup feature around 16kHz, though he did not hear it. Horizontal coverage is narrow (about +/-30 degrees), prioritizing a focused image over room involvement; listeners who prefer a wider soundstage may not like that trade-off. Ear height matters: he recommends the reference plane between woofer and tweeter rather than directly on tweeter axis. The speaker begins limiting above roughly 90dB/1m, and the two cabinets still require a physical inter-speaker cable.

Full Klipsch The Nines review and specifications →

App	Klipsch Connect (bass/mid/treble EQ)
Bass Extension (-10dB)	31Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	41Hz (measured, Erin's Audio Corner)
Dimensions	19.13"H x 9.5"W x 13.38"D
Drivers	8" high-excursion fiber-composite woofer, 1" titanium LTS vented tweeter with Tractrix horn
Frequency Response	34Hz - 25kHz +/-3dB (manufacturer specified)
Inputs	HDMI ARC, Bluetooth 5.0, phono/line RCA, 3.5mm, USB, optical
Max SPL	115dB at 1m (stereo pair, manufacturer specified)
Output Power	240W total (480W peak; 100W LF + 20W HF per powered speaker)
Sensitivity	82.5dB (measured at 0.30V/1m, Erin's Audio Corner)
Weight	28.4 lbs primary, 27.0 lbs secondary
Woofer Cabinet	rear-ported bass reflex

• Links
  • Official Klipsch The Nines Product Page
• Reviews, Comparisons and Sound Samples
  • Erin’s Audio Corner: Klipsch The Nines Really Impressed Me. More from Erin’s Audio Corner →
  • Erin’s Audio Corner Website: Klipsch The Nines
  • Erin’s Audio Corner Measurements (spinorama.org)
  • Reddit Search for Klipsch The Nines Review
• Head-to-Head Comparisons
  • Klipsch The Nines vs Kali Audio LP-6
  • Klipsch The Nines vs Adam Audio T8V
  • Klipsch The Nines vs Genelec S360
  • Klipsch The Nines vs JBL 308P MKII
  • Klipsch The Nines vs Focal Solo6 ST6
  • Klipsch The Nines vs Focal Twin6 Be
  • Klipsch The Nines vs JBL 708P
  • Klipsch The Nines vs JBL 306P MKII
  • See all 25 comparisons

Kali Audio IN-8 V2: $499.00 Amazon eBay

Pros: Three-way coaxial (coincident) driver in a front-ported cabinet, allowing near-wall placement without port noise issues; extensive dip switches handle boundary compensation, plus XLR/TRS/RCA inputs and a gain-matching volume knob. A built-in limiter makes it essentially impossible to push into mechanical distress - no cabinet buzzing, woofer bottoming, or audible failure even driven hard to 80-95dB in testing. Distortion stays below 1% THD at 86dB and under 3% at 96dB, largely thanks to that limiter. Frequency response and dynamic behavior stay essentially unchanged from 76dB up to 96dB/1m before the limiter engages around 96-102dB. Bass extends smoothly to about 50Hz. A clear step up in linearity over the original V1 version both on-axis and in estimated in-room response, and eliminates the hiss that drew complaints on the V1. Excellent soundstage depth, a benefit typical of coaxial designs, at $800/pair.

Cons: Notable forwardness/brashness in the 4-5kHz range when listened to on-axis, needing about 10° of toe-out (Kali’s own recommendation for the coaxial design) plus some EQ to fully resolve. A dip near the tweeter/voice-coil transition, likely a cancellation effect from the coincident driver’s geometry, is also improved by toeing off-axis. Bass rolls off below about 50Hz, so heavy low-bass material still needs a subwoofer. A minor resonance around 160Hz occasionally made low vocals sound a bit “hot,” though the reviewer rates it minor (about 2/10 in severity). Horizontal soundstage is narrower than non-coaxial alternatives, a typical trade-off of coincident driver designs. Vertical placement tolerance is fairly tight - usable to about ±10°, degrading past ±20°. Designed as a near/midfield monitor for roughly 1-3m listening distances, not intended as a home-theater speaker.

Full Kali Audio IN-8 V2 review and specifications →

App	No
Bass Extension (-10dB)	36Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	44Hz (measured, Erin's Audio Corner)
Bluetooth	No
DSP	No
Dimensions	17.8"H x 10"W x 11.3"D (452.1 x 254 x 287 mm)
Drivers	8" (203mm) woofer
EQ	Yes (Room adjustment)
Inputs	XLR, RCA
Output Power	140w Per Speaker
Sensitivity	89dB (measured at 0.3V/1m, Erin's Audio Corner)
Weight	22.9 lbs / 10.4 kg each

• Links
  • Official Kali Audio IN-8 V2 Product Page
• Reviews, Comparisons and Sound Samples
  • Erin’s Audio Corner: Kali IN-8 Second Wave Masterful Music on a Budget More from Erin’s Audio Corner →
  • Erin’s Audio Corner Website Kali Audio IN-8
  • Erin’s Audio Corner: I Tested 250 Speakers So You Don’t Have To!
  • Erin’s Audio Corner Measurements (spinorama.org)
  • Reddit Search for Kali Audio IN-8 V2 Review
• Head-to-Head Comparisons
  • Kali Audio IN-8 V2 vs APS Klasik 2020
  • Kali Audio IN-8 V2 vs Genelec 8040B
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