HiBy • DAPs
HiBy R6 Pro II

Universal Summary
The R6 Pro II is HiBy's $749 Android mid-fi player built around dual AK4499EX DACs with a discrete I/V stage, dual NDK femtosecond oscillators, and switchable Class-A/AB amplification: spec-sheet decoding (native DSD1024, 32bit/1536kHz) that led the market at launch. Headfonics hears a slightly laid-back, smooth signature tuned for IEM precision rather than raw wattage, recommending it as a big-screen streaming-first player or a refined IEM source. The tradeoffs: Class-A mode taxes battery and heat, output power targets IEMs not full-size headphones, and the relaxed tuning is a flavor choice that detail-first listeners may find polite.
Sources
1
Research Version
manual-dossier-v1
Comparison Ready
Snapshot available
Strengths
- Dual AK4499EX with discrete I/V and femtosecond clocking at $749
- Class-A/AB switching lets you trade battery for refinement
- Smooth, laid-back tuning that flatters long IEM sessions
Weaknesses
- IEM-first output power: full-size headphones want more
- Class-A mode runs warm and shortens battery life
- Relaxed signature can read as polite next to energetic rivals
Best For
- IEM listeners wanting precision control over brute power
- Streaming-first users who value the big screen and open Android
- Melodic, smooth genres: jazz, techno, vocal-forward libraries
Overview
What the research says
The R6 Pro II is HiBy's $749 Android mid-fi player built around dual AK4499EX DACs with a discrete I/V stage, dual NDK femtosecond oscillators, and switchable Class-A/AB amplification: spec-sheet decoding (native DSD1024, 32bit/1536kHz) that led the market at launch. Headfonics hears a slightly laid-back, smooth signature tuned for IEM precision rather than raw wattage, recommending it as a big-screen streaming-first player or a refined IEM source. The tradeoffs: Class-A mode taxes battery and heat, output power targets IEMs not full-size headphones, and the relaxed tuning is a flavor choice that detail-first listeners may find polite.
Visible Sources
Approved source material
Each source is labeled with its incentive profile: how it obtained the unit and how it earns money. How we label and weight sources
Reddit Lens
Community highlights
- Community threads recommend it as the smooth-sounding midrange Android DAP, with battery-in-Class-A and IEM-focused power as the standing notes.
qfiAudio may earn a commission from links on this page. This never affects scores or rankings. Full disclosure
Shop Links
Where to buy
Official price
$749.00
Manufacturer price. Retailer offers may differ.
Comparison Reuse
Stored snapshot
This product has a reusable comparison snapshot containing summary text, score vectors, radar values, and source attribution.
Keep Comparing