Luxman P1u

[Hopstretch]

Continual effective output 2W+2W/8Ω, 1W+1W/16Ω, 500mW+500mW/32Ω and 27mW+27mW/600Ω

Input sensitivity/input impedance

unbalanced: 1.0V/26KΩ and balanced: 1.0V/67KΩ

Total harmonic distortion 0.0025% (1KHz), 0.02% (20Hz~20KHz)

Frequency range 20Hz~20KHz (+0, - 0.1dB), 5Hz~170KHz (+0, - 3.0dB)

Signal-noise ratio 115dB (IHF-A)

Input/output

Input: 1 balanced pair, 1 unbalanced pair

Output: 2 headphone jacks and 1 through φ6.3 RCA jack

Power/dimension/weight: 19W/40 (W)

[Voltron]

I like my P1 better from a looks perspective. I also don't understand the headphone output from RCA jacks on the back.

[Icarium]

Hrm does the rear output say headphone output? Based on the specs and squinting I'd guess it says through output.. like a loop out perhaps?

[Hopstretch]

It's a loop out. Pity they didn't go the extra mile and make it a pre.

[Voltron]

I read it quickly and then the blurry, Grado-like photo almost seems to say "headphone output" on the back. Loop makes the most sense.

[blessingx]

You can only plugin two phones? Deal breaker.

[Currawong]

This means that, because the Japanese are big on the latest gear, P-1's will be available cheap.

[Hopstretch]

This means that, because the Japanese are big on the latest gear, P-1's will be available cheap.

I'll take two, please.

[purk]

Yep...the older P1 sure looks nicer. If I could land a used Jap version P1 for around 1.2k I might do it.

[Quadrangulum]

That's a bit disappointing. It doesn't seem like a big upgrade over the P-1 if it can be called an upgrade at all.

I guess Luxman America's going to sell it for $3000, more because of where the yen is in relation to the dollar today than because of improvements made to the design.

For reference, these are the P-1 mkI specs

Continuous Rated Output

4W+4W/8Ω and 2W+2W/16Ω,

1W+1W/32Ω and 500mW+500mW/64Ω,

53mW+53mW/600Ω

Input Sensitivity / Impedance

1.0V/23KΩ balance 1.0V/66K

Total Harmonic Distortion

0.008% or less (1kHz), 0.025% or less (20~20kHz)

Frequency Response

20~20Hz (+0, - 0.1dB), 10~100kHz (+0, - 0.5dB)

Signal-To-Noise Ratio (IHF-A)

Above 108dB

Inputs

One pair of RCA sockets,

One pair of Balanced sockets on XLR.

Outputs

3 outlets - quarter inch standard headphone jacks

Attachments

Volume, Balance controls, Balance Control Bypass Switch, Input selector switch,

Power switch, power source on (protection) indicator,

Balanced & UnBalanced Inputs, Line Phase Sensor, AC inlet

Electric Power Consumption

31W

Dimensions W x H x D

16.4"(467)

[raffy]

You can only plugin two phones? Deal breaker.

Ditto....I really liked the three headphone jacks on the original P-1.

[penger]

I just saw Jude's post on head-fi stating that it has the same power output of the P-200...

[Aimless1]

I would have liked to see the power output of he P1u match that of the P1. Balanced outputs and a remote would have been nice.

[Currawong]

I posted this on HF, but if one turns up at the local Stax dealer (small hi-fi shop) then I'll see if they wont let me take internal shots, though some will surely turn up on a Japanese blog somewhere sooner or later.

[Quadrangulum]

On a Higher Note :: P-1u Headphone Amplifier

A lot more details and pictures have been posted by On a Higher Note.

[spritzer]

This one seems to have only one primary on the transformer i.e. the input voltage can't be changed like on the old one. \

[kelvinz]

I got a email from on a higher note yesterday with the following information

"Luxman are replacing the P-1 reference headphone amplifier with the P-1u; another class A design, the P-1u features ODNF 3.0 and is more than four times quieter than its predecessor. We are expecting our first shipment of the P-1u in September @ $3,000; these are expected to sell out quickly as initial supplies will be limited."

[purk]

I got a email from on a higher note yesterday with the following information

"Luxman are replacing the P-1 reference headphone amplifier with the P-1u; another class A design, the P-1u features ODNF 3.0 and is more than four times quieter than its predecessor. We are expecting our first shipment of the P-1u in September @ $3,000; these are expected to sell out quickly as initial supplies will be limited."

Getting pretty expensive there. Wonder will the pricing on the original P1 will drop to 2k.

[Currawong]

As I predicted: Luxman P-1. It has 3 days to go, so it will be interesting to see what price it fetches.

[screaming oranges]

4x quieter? I don't hear any noise in mine at all. What is 4x zero...

Hmmm, maybe I should try it in the middle of the night, when it is dead quiet, to see if i hear anything. Not that I'd sell it anyway. I like my P-1.

P1u... I guess the "u" means ultimate in this case, going by the claims of performance.

[Aimless1]

I laughed when I read that it's 4X quieter. Nice marketing. I can't say as I've heard anything on the P1 either.

[screaming oranges]

Aesthetically speaking, the original P1 is 4x better...

Seriously though, the P1 does "look" better. Even the color scheme. However, I'd have upgraded to a P1u IF IT HAD BALANCED OUTPUTS.

How did that one slip by them again?

[aardvark baguette]

ehh, don't most people use hp amps as the end-of-the-chain components though?

[screaming oranges]

Well, yes, but if everything is balanced from start to finish in the chain, might as well have balanced headphones too. But I'm just being picky now.

[aardvark baguette]

I thought you meant the outputs on the back.

The front didnt even occur to me