This kit has been sold out and will be replace with ICEpower 300AS1 kit. Second gen boards are step up on the gen first boards and has a lot of valuable functions build in. Like wake up from signal. .
I have been following your great videos and I had planned on building one of your earlier amp ideas with the Iraudamp 7s and Abletec Switch Mode Power Supply board. You convinced me of how important it was to use a quality power supply. Now it's not important?
Did I miss something?... at no point in the video could I see where the line-level inputs (upper right, red/white wires) were being connected. Was that part of a different step? The only red/white wires I can see being connected are for the volume control. EDIT: After looking at another one of your videos, I'm thinking the inputs are pre-soldered to the potentiometer/volume pot? If so, that's great! But figured I should check.
The line input is the smallest connector that should sit deep. An 8 pin raster connector with 3 wires connected is line input. The line input is coming from a potentiometer. those are three 4 cm long twisted wires. Check minute 2.
No this is not the main scenario. An amplifier has been developed for high-quality music reproduction. It has perfect frequency linearity and reproduction quality aiming more for studio monitors and recording. I think that dedicated guitar combos are a better solution in your case.
@@guntarssmits2104 I could never find a guitar amp that I was completely satisfied with. Back in the late 80s I had a catastrophic guitar amp meltdown and was in a fix. This was back when one of the first "guitar processors", the Rockman, came out and I used it for the main tone of my guitar rig. I wound up rigging my pedals through the stereo Rockman and going through a spare AM/FM stereo amplifier that had the obligatory inputs for other aux. components via a RCA splitter off of a stereo guitar cable. I actually got a better reproducible sound and tone with the stereo amp than the guitar amps. I could even pump a basic drum track and base line on tape through the aux. input of the Rockman and lay down basic tracks to build the song and record it to a separate tape deck through the amplifier. Since then, I RARELY use a guitar amp. I far prefer the easier to dial in tone through a "simple" stereo amplifier if I'm not recording direct to my sound card.
No, this was my early desing with budget consideration and volume control build into the amplifier. It is not the best sounding solution. For 125ASX2 you need an input buffer. In modern audio system good external DAC, audio interface or streamer has build in volume control and balanced outputs. I have changed my designs to balance input amplifiers. It gives much better amplifier performance.
This kit will be replaced by ICEepower 300AS1 kit what has excellent sound qualityn and extra functionalities like wake up from signal. It is second gen. ICEpower board and now available in retail. Project prices are comparable with 125AS2 board solutions. Relies data planned end of March. A lot depends on sourcing. End user price is not set but it will be around 100EUR. Shipping will depend on quantity and country.
Hi Guntars, Im gonna build my 1st ICE125ASX2 amp, thus I have a question. For RCA line input I see 2 wires (red and white which are input signal, and black which is GND) so I assume that for black GND wire you combined both RCA GND wires into single one which goes to pin 7 of raster connector, right? The question is: can both line input GND wires go separatly to input raster connector (pins 7 and 6)? I will not use potentiometer so wires goes directly from RCA line input.
Yes, raster connectors pin 6 and 7 are connected together on PCB side. There is a detailed ICEpower 125ASX2 document available on the internet with pin legend. www.sound-power.ru/files/doc/ICEpower125ASX2_datasheet.pdf
@@guntarssmits2104 Thanks Guntars. I managed to build an amp. It worked with MA Bronze 6 and was fed from Denon x4500 pre-out, but after ~40 min of constant playing at meduim level (35-40dB) I heard short hizz then pop and amp went dead silent (no smoke no visual damages). One notice the black heatsink was very hot (amp was not covered,). After it cooled down the right channel is silent and from left comes white noise, no music at all. I see you have a lot of experiance with DIY amps and this unit, any idea what could go wrong? I believe it is damaged and not sure if this one can be recovered. Thanks for any hint tho.
It is obsolete now. Science Icepower doubled the price for genuine Icepower 125AS2 boards to 200EUR/board project become meaning less and is replaced with an excellent successor for 150W stereo amplifier TCR200 kit which has the following advantages:100-250V mains input range, balanced inputs by design ( Also possible use in unbalanced with adapter wire), bridged outputs by design (important for class D reproduction quality), lower heat dispatch and it is based on next generation Icepower 200AS2 board with excellent genuine TI chipset TPA3255.
In case to have a volume regulator by the book you need an electronic device with high input impedance and low output impedance. In the case of just the variable resistor regulator, you will degrade your audio performance and destroy frequency characteristics. In most cases, amplifier boards have noise suppression filter circuits at the input and are meant to work with 150 ohms output impedance sources. You can build it in the amplifier case or use an external preamp device with a volume regulator like a modern streamer/preamplifier or external sound card connected to your PC (for example something from the Focusrite family or more expensive Cambridge audio products)
China boards seems ICE power obsolete version. I have tested tehn and they sound greate. Current Icepower 125ASX2 version you can purchase from www.profusionplc.com/type/audio-amplifier . Price is significantly higher than China offering and you should trade between price and confidence:)
Guntars. I just received your mono enclosures for the ICE125ASX2 that I ordered on Ebay but, I could only find Chinese clones of the boards on Ebay. Did I just throw away my money?
I have one last piece left. I can sell it for a good price if you are interested. It is the last one what we used for tests and demos. Condition as new. It has a volume regulator as well ( Some modification). It will be the last one. If some damage happens no spare parts left. I can count risks in price. So far no units returned from all manufactured series.
Is this kit still available, and if so, where? There's no mention or link in the description.
This kit has been sold out and will be replace with ICEpower 300AS1 kit. Second gen boards are step up on the gen first boards and has a lot of valuable functions build in. Like wake up from signal. .
I have been following your great videos and I had planned on building one of your earlier amp ideas with the Iraudamp 7s and Abletec Switch Mode Power Supply board. You convinced me of how important it was to use a quality power supply. Now it's not important?
It is still important and integreated boards 65% of price is power supply. Companies like Hypex and Icepower learned how to do it
Did I miss something?... at no point in the video could I see where the line-level inputs (upper right, red/white wires) were being connected. Was that part of a different step? The only red/white wires I can see being connected are for the volume control.
EDIT: After looking at another one of your videos, I'm thinking the inputs are pre-soldered to the potentiometer/volume pot? If so, that's great! But figured I should check.
The line input is the smallest connector that should sit deep. An 8 pin raster connector with 3 wires connected is line input. The line input is coming from a potentiometer. those are three 4 cm long twisted wires. Check minute 2.
@@guntarssmits2104 Thank you!
Have you tried out a stereo guitar processor such as a Pandora's Box or the like through the amp? If so, how is the frequency quality?
No this is not the main scenario. An amplifier has been developed for high-quality music reproduction. It has perfect frequency linearity and reproduction quality aiming more for studio monitors and recording. I think that dedicated guitar combos are a better solution in your case.
@@guntarssmits2104 I could never find a guitar amp that I was completely satisfied with. Back in the late 80s I had a catastrophic guitar amp meltdown and was in a fix. This was back when one of the first "guitar processors", the Rockman, came out and I used it for the main tone of my guitar rig. I wound up rigging my pedals through the stereo Rockman and going through a spare AM/FM stereo amplifier that had the obligatory inputs for other aux. components via a RCA splitter off of a stereo guitar cable. I actually got a better reproducible sound and tone with the stereo amp than the guitar amps.
I could even pump a basic drum track and base line on tape through the aux. input of the Rockman and lay down basic tracks to build the song and record it to a separate tape deck through the amplifier.
Since then, I RARELY use a guitar amp. I far prefer the easier to dial in tone through a "simple" stereo amplifier if I'm not recording direct to my sound card.
Do you use a input buffer board on this at all?
No, this was my early desing with budget consideration and volume control build into the amplifier. It is not the best sounding solution. For 125ASX2 you need an input buffer. In modern audio system good external DAC, audio interface or streamer has build in volume control and balanced outputs. I have changed my designs to balance input amplifiers. It gives much better amplifier performance.
Hi Guntars, do you have this kit available again? Is there any source to buy it?
This kit will be replaced by ICEepower 300AS1 kit what has excellent sound qualityn and extra functionalities like wake up from signal. It is second gen. ICEpower board and now available in retail. Project prices are comparable with 125AS2 board solutions. Relies data planned end of March. A lot depends on sourcing. End user price is not set but it will be around 100EUR. Shipping will depend on quantity and country.
Hi Guntars, Im gonna build my 1st ICE125ASX2 amp, thus I have a question. For RCA line input I see 2 wires (red and white which are input signal, and black which is GND) so I assume that for black GND wire you combined both RCA GND wires into single one which goes to pin 7 of raster connector, right?
The question is: can both line input GND wires go separatly to input raster connector (pins 7 and 6)? I will not use potentiometer so wires goes directly from RCA line input.
Yes, raster connectors pin 6 and 7 are connected together on PCB side. There is a detailed ICEpower 125ASX2 document available on the internet with pin legend. www.sound-power.ru/files/doc/ICEpower125ASX2_datasheet.pdf
@@guntarssmits2104 Thanks Guntars. I managed to build an amp. It worked with MA Bronze 6 and was fed from Denon x4500 pre-out, but after ~40 min of constant playing at meduim level (35-40dB) I heard short hizz then pop and amp went dead silent (no smoke no visual damages). One notice the black heatsink was very hot (amp was not covered,). After it cooled down the right channel is silent and from left comes white noise, no music at all. I see you have a lot of experiance with DIY amps and this unit, any idea what could go wrong? I believe it is damaged and not sure if this one can be recovered. Thanks for any hint tho.
@Guntars, ICEpower 250ASX2 vs ICEPower 300AS1, which one do you recommend?
Audio quality vise they are equal. You should make your choice based on the rest of the design requirements
@@guntarssmits2104 Many Thanks
Hello friend, could you tell me what is the ohmic value of the volume potentiometer?
10KOhm
@@guntarssmits2104 Hello friend, THANKS
No link to the kit? or name of it?
It is obsolete now. Science Icepower doubled the price for genuine Icepower 125AS2 boards to 200EUR/board project become meaning less and is replaced with an excellent successor for 150W stereo amplifier TCR200 kit which has the following advantages:100-250V mains input range, balanced inputs by design ( Also possible use in unbalanced with adapter wire), bridged outputs by design (important for class D reproduction quality), lower heat dispatch and it is based on next generation Icepower 200AS2 board with excellent genuine TI chipset TPA3255.
@guntarssmits2104 i need something with a volume knob for my situation but seems like none of the new kits have one.
In case to have a volume regulator by the book you need an electronic device with high input impedance and low output impedance. In the case of just the variable resistor regulator, you will degrade your audio performance and destroy frequency characteristics. In most cases, amplifier boards have noise suppression filter circuits at the input and are meant to work with 150 ohms output impedance sources. You can build it in the amplifier case or use an external preamp device with a volume regulator like a modern streamer/preamplifier or external sound card connected to your PC (for example something from the Focusrite family or more expensive Cambridge audio products)
hi, where can I find this boards? do you sell them? are they Chinese or from ICEpower directly? let me know
China boards seems ICE power obsolete version. I have tested tehn and they sound greate. Current Icepower 125ASX2 version you can purchase from www.profusionplc.com/type/audio-amplifier . Price is significantly higher than China offering and you should trade between price and confidence:)
Do you have a link to the chassis that you used. Thx.
I have sold out all of them. Just one left for just in chase. If you are interested I can put it on ebay. Price is 89USD
@@guntarssmits2104 Thank you was wondering what the cost would be. I am still deciding if I want to try this build.
@@kennith. Total costs would be enclosure 89+board v1( available in eBay for 130USD) v2 for about 160USD. Total project costs 220-250USD.
@@guntarssmits2104 Thank you for the information.
Nice work. It is delivered to Brazil ?
Yes, it is
Guntars. I just received your mono enclosures for the ICE125ASX2 that I ordered on Ebay but, I could only find Chinese clones of the boards on Ebay. Did I just throw away my money?
What's the link to get that kit?
This kit is sold out. In October we will realise new version of this kit.
Hi Guntars, where can the chassis be bought?
It ison eBay www.ebay.com/itm/114320738335
@@guntarssmits2104 Already sold out...will more be available soon?
@@guntarssmits2104 Also, will you be selling the mono version of the kit as you described in earlier TH-cams?
👍👍👍
any 250 version in the works?
I have one last piece left. I can sell it for a good price if you are interested. It is the last one what we used for tests and demos. Condition as new. It has a volume regulator as well ( Some modification). It will be the last one. If some damage happens no spare parts left. I can count risks in price. So far no units returned from all manufactured series.
The 250W version is not an audiophile quality as THE 125W version. Better use two 125asx2 in BTL mode. Visit Ghentudio.com for more details
Could you tell me where I can find this kit, please? Thanks!
It is not available anymore. There are second gen ICEpower boards and I made a kit for ICEpower200AS2 board. Check my website www.tcrastrs.com