 Okay, hello everybody and welcome back to my channel, my V-LOG. Now I've built up this little NAM, I've done both of the boards here. This NAM NAP 140. That is easy enough to build up all the parts for that, that's all good. And I've got it connected up over here at the recommended voltage, which is 40 volts per side and we can go to eight and a quarter. So that, if needed, which I don't think it will be, let's take a quick peek at the screen for a quick recap on what this is. Here we are, the DIY boards look. This is, well mine's actually the L, let's have a look on my back again, where is it? On the front here it says NAP 140 Client, LJM. But that's pointed out by a sharp-eyed viewer, Sonny Cox there, there's no, there's no panda on this one or anything like that on it. But there is this note on the back which is VBE, which means the voltage between the base and the emitter has to be less than 450 millivolts. So we've got a, so we've got a multimeter set up here and we can, we can keep an eye on that. I've already got it connected, pin one is the base and then it goes collector in the middle on this particular one and then on the right hand side pin three is the emitter. So I've got my probes connected up between there and there. So I'm just going to power on now, on this power supplies, three, two, one. Alright, so we're powered on and as you can see the voltage there is 0.39. Well now what I'm going to do is I'm just going to leave a few minutes while fast forward through this bit. No, natural factor while that's just warming up slightly, I do like to keep a little bit of warm up time keeping on things. Let's go back to the screen for a minute and have a quick recap on what it says. Now to be honest with you, all I found was this information pretty much copied and pasted. There is no other information, there's no output charts or anything like that so you get to see anything. It is just as it is, which is not the normal way. You don't get these in here, you get a bunch of little, let me show you here, see the little maroon coloured red, I don't know what colour that colour is but there's one here right by my thumb, that colour you get those instead. And you don't get any of these, these ceramics here are, actually no they're not ceramics looking, they look like they're tantalum. Then you don't get any of those. I'm trying to see what else you might have had in replacement of those. You've got a little tiny puff there, 1, 2, 3, I don't know if that's for a cubby but why would there be 3, 4. So 1, 2, 3, 4, yes so these have been replaced as well with these red ones because they're different values. In the kit that I got anyway, yeah well this is good and that's it, that's all she wrote on that. And this is the wire up setup so you can see from here you've got this ground on mine it says P ground here which would be power ground and then there's also the input so you've got the signal input here from the positive and you've got the ground there and this all goes like a star type shape thing. You don't want to connect this to this directly because there isn't a connection between here and here but when you pull it all together to ground on your power supply that's when that will work. And then you've got your outputs here, I don't know which side to which, that's VE the negative side and this is VCC the plus side oh it says so here as well if you can see that and the speaker outputs. So that's it, that's all she wrote on that. So now what we're going to do is we're going to take a peak, now this thing's settled a bit and a quick look at the bench and we can see we're on a 0.4348 as it's warmed up into its, it doesn't go any higher than 450 natural pad, it stays round about this and you can adjust that. Let me just show you the way how you adjust that there's one little tweaky tool. So yeah there's a pot on here, 2k pot and if we turn it anti-clockwise it will go down on the voltage on the thing there, let me just get my little thing in and turn it down look as it goes down. Oh you can turn it clockwise and it will go up. That was going to leave it around about there so it doesn't really matter. Alright let's get a set up over here, so we're on SPA and we are going to start putting some power in let's press plate, oh we can see that, let me just bring that down so we've got 0 at the top there bring that back up so we've got 160 line here and so we can see our noise fall, let me just put some averages on that to have a little look this is with the power on, let's just average that out. It doesn't seem too bad there's our 50 hertz because I'm in the 50 hertz area I've got a couple of little bits going through here, let me turn the averaging off so we can turn the volume up so here we go, input going in and straight away you can see there's quite a lot of a lot going on here and if you look here down the bottom THD, plus the noise is near enough 0.1%, I like THD a little bit better let me move that and show you that, that's a very small amount of current as you can see over here as well on the voltage between the base and the emitter has gone up slightly that's fine because it can handle 5 volts between there let's start going up more we could actually say as that's going up that the THD is going a little bit better what if I just misplaced myself with that, let's go down again yeah look it's a little bit worse there, it gets a little bit better then we go up we go up and we get to about there and look we're on minus 18.4 dBFS and we've jumped to 0.2% our current load is that, not a lot, not a lot and if I turn it up a bit more as you can see the THD now up, minus 15.6 dBFS is 3.6% THD noise a bit more, let's just turn that up a bit higher, let's try and get it on that 10 dBFS there we go, you know it's 3.5% still, it's not looking good, I'm going to go here just to get that there you go, 2.9, 3.26, we're using over there, all right so we're going to relieve that turn all the way down well you know that's not good, that's not good I mean if you want a tube sound then it's okay because you've got a lot of harmonics here, not that much in between them but there's still a lot of harmonics there and the noise floor goes up as well as you go loud oh look THD 5.2% so there's a little area there where it actually goes up on the THD and the noise and if we can carry on going up it drops back down again so that's just that's just a bit weird isn't it, so 4.8% up to a 0.2, this would be normal listening volume probably so you get the higher THD, yeah so look at that 5% wow and the noise floor, let's see how much that drops when you drop it down on volume a bit that's going to minus 19.8 and we're using 1.63 milliamps and then you go up a little bit around 2% THD you know this is 0.217 milliamps it's not good and the noise floors jumped from down there, let's go down so there's this little bit here look in the middle and then the next jump is there yeah and you see all these when you jump up to that next bit all these bits come through, it's just one pop yeah that's not very good all right so let's just stop that for a minute and we'll have a little look on frequency response I'm not going to do much more on this because it's a nasty frequency response okay no it's just, no is it not the alarm meter, will it the alarm, no it's not the alarm meter drop this baby down but we'll have a little, all right okay all right so look I'm not going to do much else with it you can see the frequency response there all right so it's a thumbs down from me on this if you want a NAMM NAP so far this would be a fail and the NAMM NAP 250 is a much better outcome than what this is £28 down the drain for me and you know the thing that gets me sometimes is when I built these up every single resistor is placed so you can read it from top to down or if it's left to right you'll read it from left to right all the capacitors are all facing the same way on the left unless it's a leap year then I'll put them to the right and you know I put a lot of time into setting these up so it's lovely and I can't even sell this on eBay as they're working with the results I can't sell it because it's just rubbish I wouldn't want to sell it like that so anyway that's that that's the conclusion of that my yeah my thing is it's a garbage I wouldn't bother buying one but of course your choice is yours but if you did want one that was a NAMM and then I would suggest that you go for the NAMM NAP 250 because that's a much better output on a kit and you'll be a lot happier with that all right that's that thanks for watching and I'll catch you in the next one bye bye for now