Cayin - RU3 - Black vs FX-Audio TUBE-02 PRO
Every tracked fact about the two, side by side - prices, history lows, ratings. No verdict: which one to buy is the visitor's decision, always.
Cayin - RU3 - Black
Cayin
Lowest on record ₹7,999 on Sunday, 11th Oct, 2026
★★★★★ 4.7 4.7 · 20 reviews
Full prices & history
FX-Audio TUBE-02 PRO Double JAN5725W Tube Class A Headphone Amplifier AMP - Silver
fx
Lowest on record ₹7,900 on Saturday, 7th Nov, 2026
Full prices & history
What is being compared
Both sides are DACs / headphone amplifiers. The rows below are the facts each store publishes for this shelf - converter chip, output power, inputs, balanced output and digital formats. A dash means the listing does not state that spec.
Spec
Cayin
fx
Type
—
Amplifier
Price over the last 30 days
Daily lowest price across every tracked store, from the site's own price history. The line is one product's own range - the two cards are not drawn to a shared scale.
Cayin - RU3 - Black
24% above its 30-day median
Lowest on record ₹7,999 on Sunday, 11th Oct, 2026
In stock at 1 tracked store
FX-Audio TUBE-02 PRO Double JAN5725W Tube Class A Headphone Amplifier AMP - Silver
at its 30-day median
Lowest on record ₹7,900 on Saturday, 7th Nov, 2026
In stock at 1 tracked store
Price gap right now
₹1,899
19% of the dearer one's price.
Stores with it in stock
1 vs 1
Active stores carrying each one right now - more stores usually means easier replacement and a steadier price.
The decision, factually
Cheaper right now
FX-Audio TUBE-02 PRO Double JAN5725W Tube Class A Headphone Amplifier AMP - Silver
Lowest current price across all tracked stores - ₹8,000 vs ₹9,899.
Deepest discount ever seen
FX-Audio TUBE-02 PRO Double JAN5725W Tube Class A Headphone Amplifier AMP - Silver
From each product's own recorded price history.
This page reports facts and expresses no opinion on which to purchase.