Hi amigos,
Just want to share some pictures of my new toy )
I took some risk when buying this amplifier... but when I plugged it : wouaaaaaaaaaa ! I am am absolutely surprised how good this amplifier sounds for its price ! I come from Class D world... see my review about high end TPA3255 / 51 and other class D amplifier (Hypex NC250 / NC500MP) etc...
This amplifier blew me away regarding Medium and Tweeter :
reproduction of mid and high frequencies seem to be very very good.
VS my Hypex double Mono NCore : it is less present in the bass but the treble and mids are more forward, the notes in these frequencies are absolutely incredible
VS my high TPA3255 by DrMordor (with PFFB OPA1602) : the bass is also less indented and drier. As for the midrange and treble it is the same observation, excellent rendering, especially on plucked string instruments and cymbals.
This amplifier is absolutely dead silence and noiseless.
Really well made, seems solid. full alu case
Spec :
Toroidal PSU
EPCOS 5200uf caps / Nichicon
RSN312H24 audio Chip
THD : 0.01%
SNR : 100DB
70W / 8 ohms
Omron relay
CSR8675 BT Aptx HD
Alps potentiometer
Just want to share some pictures of my new toy )
I took some risk when buying this amplifier... but when I plugged it : wouaaaaaaaaaa ! I am am absolutely surprised how good this amplifier sounds for its price ! I come from Class D world... see my review about high end TPA3255 / 51 and other class D amplifier (Hypex NC250 / NC500MP) etc...
This amplifier blew me away regarding Medium and Tweeter :
reproduction of mid and high frequencies seem to be very very good.
VS my Hypex double Mono NCore : it is less present in the bass but the treble and mids are more forward, the notes in these frequencies are absolutely incredible
VS my high TPA3255 by DrMordor (with PFFB OPA1602) : the bass is also less indented and drier. As for the midrange and treble it is the same observation, excellent rendering, especially on plucked string instruments and cymbals.
This amplifier is absolutely dead silence and noiseless.
Really well made, seems solid. full alu case
Spec :
Toroidal PSU
EPCOS 5200uf caps / Nichicon
RSN312H24 audio Chip
THD : 0.01%
SNR : 100DB
70W / 8 ohms
Omron relay
CSR8675 BT Aptx HD
Alps potentiometer
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Some of the components (caps) looks old and used. I would be cautious to buy this product... why promote this?
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I dont promote )
Just think this amplifier sounds absolutely great for the price.
This is just to help peope to discover new products.
look at all my contributions you will understand)
Just think this amplifier sounds absolutely great for the price.
This is just to help peope to discover new products.
look at all my contributions you will understand)
Hi,
It is based on Sanyo RSN312H24 chip.
I did not check if you we can change / upgrade those Epcos Caps. I guess yes :
Electrolytic Capacitor
B41790A7258Q001 EPCOS / TDK | Mouser Luxembourg
It is based on Sanyo RSN312H24 chip.
I did not check if you we can change / upgrade those Epcos Caps. I guess yes :
Electrolytic Capacitor
B41790A7258Q001 EPCOS / TDK | Mouser Luxembourg
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Very intersesting ! seems a class ab amp whith modulation of voltage.
Class H Amps
Class H - If an amplifier has more than one voltage (DC voltage delivered by the power supply), then it is referred to as Class H. This is a very efficient type of amplification. The output transistors of an amplifier must dissipate, in heat (Watt), the difference between the supply voltage and the voltage at the speaker terminals, multiplied by the current (as stated in Ohm's Law). In order, when there is a low supply voltage for use during low volume periods, and a high voltage for use during high volumes, the output transistors do not have to dissipate a lot of energy when the volume is low. This puts less energy on the power supply and allows the assemblies to be made very light. The downside is the distortion at mid-volume when the amplifier has to switch between the two (or more) supply voltages.
Class H Amps
Class H - If an amplifier has more than one voltage (DC voltage delivered by the power supply), then it is referred to as Class H. This is a very efficient type of amplification. The output transistors of an amplifier must dissipate, in heat (Watt), the difference between the supply voltage and the voltage at the speaker terminals, multiplied by the current (as stated in Ohm's Law). In order, when there is a low supply voltage for use during low volume periods, and a high voltage for use during high volumes, the output transistors do not have to dissipate a lot of energy when the volume is low. This puts less energy on the power supply and allows the assemblies to be made very light. The downside is the distortion at mid-volume when the amplifier has to switch between the two (or more) supply voltages.
Those capacitors look well broken in. 🙂
What part do you think is most responsible for audio signature output?
What part do you think is most responsible for audio signature output?
In term of sound signature it is between a MOS120 (for those who know) and a great class D amplifier.
This amplifier just use some Sanyo chips. I would say this a remake of RSN312H24 with modern concept (APTX HD)