Bowers & Wilkins Pi8 vs Sennheiser Momentum True Wireless 4
Bowers & Wilkins Pi8 (#2, best premium) vs Sennheiser Momentum True Wireless 4 (#4): in our Earbuds for Music scoring the Bowers & Wilkins Pi8 totals 8.9/10 and the Sennheiser Momentum True Wireless 4 8.8/10.
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TopsFive comparison scores
Side by side
| Bowers & Wilkins Pi8 | Sennheiser Momentum True Wireless 4 | |
|---|---|---|
| Driver | 12mm carbon cone | 7mm TrueResponse transducer |
| Codecs | aptX Lossless, aptX Adaptive (24-bit/96kHz), AAC | aptX Lossless, aptX Adaptive, AAC, LC3 |
| Battery | 6.5h / 20h total | 7.5h / 30h total |
| Unique Feature | Case retransmission | — |
| Frequency Response | — | 5Hz-21kHz |
| THD | — | 0.08% at 94dB |
| Price | Check price → | Check price → |
How they differ in real use
Built from our earbuds music scoring, each product's published specifications, and verified owner feedback — not hands-on testing.
Both the Bowers & Wilkins Pi8 and the Sennheiser Momentum True Wireless 4 made our Top 5 Earbuds for Music, at #2 (best premium) and #4. Luxury audiophile earbuds with transmitter case for aptX Adaptive to any Bluetooth source, plus 24-bit/48kHz DAC onboard. Natural, vocal-forward signature with aptX Lossless for CD-quality wireless streaming, now regularly discounted to around $179.
We score earbuds for music on Sound Quality (40%), Codec Support (20%), Soundstage (15%), Comfort (15%) and Value (10%). On that basis the Bowers & Wilkins Pi8 totals 8.9 out of 10 and the Sennheiser Momentum True Wireless 4 8.8. The widest gap is Sound Quality, where the Bowers & Wilkins Pi8 scores 9.5 against 8.9 for the Sennheiser Momentum True Wireless 4: driver technology and tuning. Codec Support also separates them: 9.5 for the Sennheiser Momentum True Wireless 4 versus 9 for the Bowers & Wilkins Pi8. The Sennheiser Momentum True Wireless 4 claws back ground on Value.
On paper, the specifications that actually differ: Driver: 12mm carbon cone on the Bowers & Wilkins Pi8 versus 7mm TrueResponse transducer on the Sennheiser Momentum True Wireless 4; Codecs: aptX Lossless, aptX Adaptive (24-bit/96kHz), AAC on the Bowers & Wilkins Pi8 versus aptX Lossless, aptX Adaptive, AAC, LC3 on the Sennheiser Momentum True Wireless 4; Battery: 6.5h / 20h total on the Bowers & Wilkins Pi8 versus 7.5h / 30h total on the Sennheiser Momentum True Wireless 4.
Check current pricing at the merchant links below. Owners praise the Bowers & Wilkins Pi8 for 12mm carbon cone drivers and case functions as DAC/wireless transmitter; the most common complaint is highest price at $399. Owners praise the Sennheiser Momentum True Wireless 4 for 7mm TrueResponse transducers and 0.08% THD (among lowest tested); the most common complaint is expensive.
Bowers & Wilkins Pi8
- 12mm carbon cone drivers
- Case functions as DAC/wireless transmitter
- aptX Lossless (CD-quality)
- Holographic imaging
- Highest price at $399
- Shortest battery (6.5h)
- Bulkier case
Sennheiser Momentum True Wireless 4
- 7mm TrueResponse transducers
- 0.08% THD (among lowest tested)
- aptX Lossless support
- Best transparency mode in class
- Expensive
- Bulkier than competitors
- App could be better
Which should you buy?
The Bowers & Wilkins Pi8 is the better fit for luxury audiophiles and iPhone users wanting aptX; it is the higher-scoring pick here, chiefly for Sound Quality and Soundstage. The Sennheiser Momentum True Wireless 4 is the better fit for vocal and acoustic enthusiasts and those wanting natural timbre, and the stronger choice if Codec Support and Value matter more to you than the overall score. The Bowers & Wilkins Pi8 is a poor fit for budget shoppers; the Sennheiser Momentum True Wireless 4 is a poor fit for budget shoppers.
Choose the Bowers & Wilkins Pi8 if
- Luxury audiophiles
- iPhone users wanting aptX
- Those connecting legacy gear
Skip it if
- Budget shoppers
- Battery-priority users
Choose the Sennheiser Momentum True Wireless 4 if
- Vocal and acoustic enthusiasts
- Those wanting natural timbre
- CD-quality streaming
Skip it if
- Budget shoppers
- Those wanting smallest earbuds
Common questions
Is the Bowers & Wilkins Pi8 better than the Sennheiser Momentum True Wireless 4?
In our Earbuds for Music ranking the Bowers & Wilkins Pi8 scores higher overall, 8.9 to 8.8, with the biggest advantage in Sound Quality. The Sennheiser Momentum True Wireless 4 is stronger on Codec Support and Value, so it is the better pick if those matter most to you.
What is the main difference between the Bowers & Wilkins Pi8 and the Sennheiser Momentum True Wireless 4?
The headline spec difference is Driver: 12mm carbon cone on the Bowers & Wilkins Pi8 versus 7mm TrueResponse transducer on the Sennheiser Momentum True Wireless 4. In use, the gap that matters most is Sound Quality (9.5 vs 8.9 in our scoring): driver technology and tuning.