BTC
ETH
LTC
BCH
DOGE
USDT
DASH
USDC
XRP
XMR
TRX
BNB
SHIB
SOL
DAI
ZEC
ETC
POL
ADA
XLM
Description
Incredible Performance Meets Rare Exclusivity, the MASS-Kobo 491 Stands as a Headphone Amplifier Revered by Audiophiles
Twin-balanced Monoblock Headphone Amplifier with Four High-performance Amplifier Stages
Each Unit is Handmade with Individual Components Selected and Personally Tested by One Man, Mr. Masuda
It Carries the Legacy of the Highly Acclaimed Model 465
Made to Order in Japan
Features the Addition of a 4.4mm Balanced Output
Model 491
The MASS-kobo Model 491 is the successor to the flagship Model 465, a twin-balanced monoblock headphone amplifier with four high-performance amplifier stages and fully independent left and right power supplies, a topology more commonly found in high-end loudspeaker amplifiers than in headphone designs. Delivers over 3.5 W + 3.5 W into 32 Ω balanced, enough to drive the HIFIMAN Susvara at reference quality.
Sound Experience
A clean, stress-free presentation that the manufacturer describes as making the listener "forget the amplifier is even there." The independent dual-mono power supplies and twin-balanced topology contribute to a vanishingly low noise floor and exceptional channel separation: the conditions under which low-efficiency planar magnetic headphones reveal their full dynamic and tonal range without the amplifier imposing its own character.
Build
Housed in a compact desktop chassis measuring 13.0 × 9.7 × 4.1" and weighing 13lbs (excluding the power cable), the Model 491 is designed to fit seamlessly into a high-end desktop setup. Its front panel offers a full suite of balanced and single-ended headphone outputs, ensuring compatibility with virtually any modern headphone cable termination.
Twin-balanced Monoblock Headphone Amplifier with Four High-performance Amplifier Stages
Each Unit is Handmade with Individual Components Selected and Personally Tested by One Man, Mr. Masuda
It Carries the Legacy of the Highly Acclaimed Model 465
Made to Order in Japan
Features the Addition of a 4.4mm Balanced Output
Model 491
The MASS-kobo Model 491 is the successor to the flagship Model 465, a twin-balanced monoblock headphone amplifier with four high-performance amplifier stages and fully independent left and right power supplies, a topology more commonly found in high-end loudspeaker amplifiers than in headphone designs. Delivers over 3.5 W + 3.5 W into 32 Ω balanced, enough to drive the HIFIMAN Susvara at reference quality.
Sound Experience
A clean, stress-free presentation that the manufacturer describes as making the listener "forget the amplifier is even there." The independent dual-mono power supplies and twin-balanced topology contribute to a vanishingly low noise floor and exceptional channel separation: the conditions under which low-efficiency planar magnetic headphones reveal their full dynamic and tonal range without the amplifier imposing its own character.
Build
Housed in a compact desktop chassis measuring 13.0 × 9.7 × 4.1" and weighing 13lbs (excluding the power cable), the Model 491 is designed to fit seamlessly into a high-end desktop setup. Its front panel offers a full suite of balanced and single-ended headphone outputs, ensuring compatibility with virtually any modern headphone cable termination.
SKU: MASS-KOBO-491
