[MusicTeck]

MASS-Kobo Model 465 Balance Headphone Amp--In Stock​

Model465 adopts the independent left and right power, twin balance monaural.

A clean, stress-free sound that does not feel the presence of the amp is a sound appropriate for a flagship model.

The output of this amplifier is balanced output 3.5 W + 3.5 W (32 Ω load).

Input is Balanced XLR 3 pin and Unbalanced RCA.

Reference input levels of Balanced are + 4 dBm / - 10 dBm selectable.

If you connect a device with an unbalanced output to a balanced input, the output will not be balanced.

Connect devices with unbalanced output to the RCA input terminals.

Limited 1 Unit ready to ship. The production lead time can take up to 4 months.

Specifications

Model: Full-balanced stereo headphone amp
Input : Balance = Electronically Balanced XLR3 x2 , Unbalanced = RCA x2
Output : Balance = XLR4-31 x 1 or XLR3-31 x 2(L,R) , Unbalance = φ6.3 TRS
Input Impedance : Balance = 3.7kOhm(XLR) , Unbalance = 20kOhm(RCA)
Reference Input Level : Balance = +4dBm/-10dBm (Selectable) , Unbalance = -10dBm
Maximum Input Level : balance = +30dBm , Unbalance = +20dBm
Maximum Output Level (P-P) : Balance = 32V (with 32Ω loaded, 1kHz, THD+N 0.05%)Unbalance = 22V (with 32Ω loaded, 1kHz, THD+N 0.05%)
(RMS): Balance = 10.7V (with 32Ω loaded, 1kHz, THD+N 0.05%) Unbalance = 7.4V (with 32Ω loaded, 1kHz, THD+N 0.05%)
Maximum Output without Distortion : Balance = 3.8W+3.8W , Unbalance =1.8W+1.8W (with 32 ohm load, 1kHz, THD+N 0.05%)
Frequency Characteristics : 10Hz - 100kHz (-0.5dB) , 17Hz-50KHz(-0.2dBm)
Power Supply : AC100 - 240V, 50/60Hz Electric Energy Consumption : 0.9A (with AC100V)
Size: 330mmW x 247mmD x 104mmH (Knob, projecting part of connector not included )
Weight: 6.1kg (without the power cable)

MASS-Kobo Model 394II Balance Headphone Amp--In Stock​

MASS-Kobo Model 433 Full Balanced Headphone Amp--In Stock​

MASS-Kobo Model 475 Full-Balanced Portable Headphone Amp--In Stock​

 

[Jacobal]

$19,000……?

 

[Tubewin]

$19,000……?

Yeah, I rather just save up for the Senn HE-1 at that point.

 

[alphaman]

Yes, the unit prices are high.
It would be good to see what's under the hood. Inside shots, anyone?

 

[quawn0418]

What does it eat?

 

[rmsanger]

Mass Kobo is the goat.. dream matchup would be this vs 394 vs OJI.

 

[Alenotta]

This sounded so good at CanJam.

 

[chesebert]

"Input Impedance : Balance = 3.7kOhm(XLR) , Unbalance = 20kOhm(RCA)"

Is this correct? Are both bal and unbal figures measured at the same frequency?

 

[chesebert]

Not 465, but probably close enough. Does it look like opamp voltage gain (discrete opamp?) and discrete buffer stage?

 

[chesebert]

Here is 394

 

[alphaman]

Here is 394

Typical op-amps in the output of a 5,739.00 headphone amp is questionable. Maybe you could swap in some Burson discretes or something

 

[chesebert]

Typical op-amps in the output of a 5,739.00 headphone amp is questionable. Maybe you could swap in some Burson discretes or something

I agree it’s not a “high end” implementation from a first glance. However, we don’t know for sure whether all or some of the opamps are used for voltage gain. I would reserve judgement until you can demo one in a reasonably quiet environment.

 

[TheAbyss2022]

Apparently this is the best amplifier ever made?

 

[Somafunk]

I see zeos is enthusiastic

 

[rmsanger]

What was the super totl mass kobo before? The one that was gold and had a dragon on it?

i wonder if that one compares favorably