Takeda`1537
100+ Head-Fier
Thank you fir replying ... I missed spotting your point out of the thread. This is really useful!
Luxury & Precision (LP) W4, Successor to Their Popular W1/W2 USB Dongle is Here!
- Thread starter bluestorm1992
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searchingtom
100+ Head-Fier
Darn. I saw the glass back and thought maybe ?? Thanks for responding !!
HBryant
New Head-Fier
you think they will drive the XTC headphones? They are I think 63ohm or 64 ohm.
More info on LP5108 chip. Looks like integrated dac/amp in one.
http://bbs.erji.net/forum.php?mod=viewthread&tid=2299518&extra=page=1
http://bbs.erji.net/forum.php?mod=viewthread&tid=2299518&extra=page=1
Very cool design. Good timing for me as I just bought a LGV60 to permanently move away from DAPs. I'd like to know more about their internally designed chip too. 
According to the link Lebi ( L&P ) will develop an R2R chip in the future. Great
.
bluestorm1992
Headphoneus Supremus
Two more pics of the new dongle. BTW, the official name is out: W4! 
W4 is expected to be available for sale in May.
W4 is expected to be available for sale in May.
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What happened to W3? 
The leather case is nice but I started to like green case of my W2 now.
The leather case is nice but I started to like green case of my W2 now.
bluestorm1992
Headphoneus Supremus
I think they may have different colors, but let me see if I can confirm it from somewhere.What happened to W3?
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Two more pics of the new dongle. BTW, the official name is out: W4!
W4 is expected to be available for sale in May.
So, multifunction jog-dial and no more buttons, right? And, it looks like L7Audio Lab review/measurement site already got the unit
ChrisLN
100+ Head-Fier
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From a chat group: RMB 3999
Will be nice if more IEMs presets will be added such as IE600, IE900 etc.
L&P's first chip LP5108 performance revealed!
After a "long" wait of three weeks, the performance of the LP5108 chip is finally revealed! The correct answer is D,C,D,B, did you guess it right?
Decoding performance comparable to "flagship DAC" -
① Dynamic range of 134dB, on par with AKM's flagship DAC-AK4499. Without amplification, it is difficult for AP555x to test up to 134dB, only up to 133dB, which is currently the limit of dynamic performance for DAC chips;
② Total harmonic distortion + noise (THD+N) -122dB, on par with ESS's flagship DAC-ES9038PRO.
Output power comparable to "mainstream DAP" - Under 32Ω load conditions, LP5108 outputs no less than 400mW per channel. The power here refers to "effective push", which is measured under the condition of 0.001% distortion. LP5108's detailed performance can be found in the datasheet: In addition to the built-in flagship performance DAC and high-power headphone amplifier, LP5108's power consumption can be far lower than that of integrated decoding and headphone amplifier products on the market, truly reflecting its "high energy and low consumption" attribute.
In terms of chip architecture and size, our final LP5108 chip adopts an LGA package with a size of 18.5×9.5, corresponding to option B (17.5×9.5), which is still the correct op.
There is a small detail: we have placed the pins under the chip in the final version, instead of "exposed" like the 9038/4499. The advantage of the latter is that it is easy to solder, but it takes up more circuit board surface area (the theoretical size of 9038/4499 is 10x10, but the actual size occupied is 12x12). However, the "recessed" pins will improve the efficiency of circuit board space utilization, which will make it easier to design products like the following without running into difficulties.
4-fold evolution - L&P's new machine with the first application of LP5108 chip. Because it is the first time to develop a chip, in the new product with the first application of LP5108, we chose the relatively mature "small tail" form to fully utilize the four characteristics of LP5108: "low distortion", "high dynamic range", "strong push power" and "low power consumption", and to take "mobile HiFi" to a new level. In addition to the performance transformation, there are also different appearances, multi-functional independent knobs and other practical new skills. After being equipped with the LP5108 self-developed chip, to what extent will the small tail evolve? Let's wait and see!
After a "long" wait of three weeks, the performance of the LP5108 chip is finally revealed! The correct answer is D,C,D,B, did you guess it right?
Decoding performance comparable to "flagship DAC" -
① Dynamic range of 134dB, on par with AKM's flagship DAC-AK4499. Without amplification, it is difficult for AP555x to test up to 134dB, only up to 133dB, which is currently the limit of dynamic performance for DAC chips;
② Total harmonic distortion + noise (THD+N) -122dB, on par with ESS's flagship DAC-ES9038PRO.
Output power comparable to "mainstream DAP" - Under 32Ω load conditions, LP5108 outputs no less than 400mW per channel. The power here refers to "effective push", which is measured under the condition of 0.001% distortion. LP5108's detailed performance can be found in the datasheet: In addition to the built-in flagship performance DAC and high-power headphone amplifier, LP5108's power consumption can be far lower than that of integrated decoding and headphone amplifier products on the market, truly reflecting its "high energy and low consumption" attribute.
In terms of chip architecture and size, our final LP5108 chip adopts an LGA package with a size of 18.5×9.5, corresponding to option B (17.5×9.5), which is still the correct op.
There is a small detail: we have placed the pins under the chip in the final version, instead of "exposed" like the 9038/4499. The advantage of the latter is that it is easy to solder, but it takes up more circuit board surface area (the theoretical size of 9038/4499 is 10x10, but the actual size occupied is 12x12). However, the "recessed" pins will improve the efficiency of circuit board space utilization, which will make it easier to design products like the following without running into difficulties.
4-fold evolution - L&P's new machine with the first application of LP5108 chip. Because it is the first time to develop a chip, in the new product with the first application of LP5108, we chose the relatively mature "small tail" form to fully utilize the four characteristics of LP5108: "low distortion", "high dynamic range", "strong push power" and "low power consumption", and to take "mobile HiFi" to a new level. In addition to the performance transformation, there are also different appearances, multi-functional independent knobs and other practical new skills. After being equipped with the LP5108 self-developed chip, to what extent will the small tail evolve? Let's wait and see!
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Where's the buy button?L&P's first chip LP5108 performance revealed!
After a "long" wait of three weeks, the performance of the LP5108 chip is finally revealed! The correct answer is D,C,D,B, did you guess it right?
Decoding performance comparable to "flagship DAC" -
① Dynamic range of 134dB, on par with AKM's flagship DAC-AK4499. Without amplification, it is difficult for AP555x to test up to 134dB, only up to 133dB, which is currently the limit of dynamic performance for DAC chips;
② Total harmonic distortion + noise (THD+N) -122dB, on par with ESS's flagship DAC-ES9038PRO.
Output power comparable to "mainstream DAP" - Under 32Ω load conditions, LP5108 outputs no less than 400mW per channel. The power here refers to "effective push", which is measured under the condition of 0.001% distortion. LP5108's detailed performance can be found in the datasheet: In addition to the built-in flagship performance DAC and high-power headphone amplifier, LP5108's power consumption can be far lower than that of integrated decoding and headphone amplifier products on the market, truly reflecting its "high energy and low consumption" attribute.
In terms of chip architecture and size, our final LP5108 chip adopts an LGA package with a size of 18.5×9.5, corresponding to option B (17.5×9.5), which is still the correct op.
There is a small detail: we have placed the pins under the chip in the final version, instead of "exposed" like the 9038/4499. The advantage of the latter is that it is easy to solder, but it takes up more circuit board surface area (the theoretical size of 9038/4499 is 10x10, but the actual size occupied is 12x12). However, the "recessed" pins will improve the efficiency of circuit board space utilization, which will make it easier to design products like the following without running into difficulties.
4-fold evolution - L&P's new machine with the first application of LP5108 chip. Because it is the first time to develop a chip, in the new product with the first application of LP5108, we chose the relatively mature "small tail" form to fully utilize the four characteristics of LP5108: "low distortion", "high dynamic range", "strong push power" and "low power consumption", and to take "mobile HiFi" to a new level. In addition to the performance transformation, there are also different appearances, multi-functional independent knobs and other practical new skills. After being equipped with the LP5108 self-developed chip, to what extent will the small tail evolve? Let's wait and see!
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