Proper gainstaging puts each component of the signal chain at it's quietest setting. It gave channels five and six the same EQ and send options as the four main channels, allowing the user to mix six mono sources and making effects returns far more tweakable. The mkIII evolution, in my opinion, is the pinnacle of four-track technology. If for example, you have the trim too low on a weak signal you have to turn the fader up more. The 424 mkII also reverted to the 414s iconic blue color. Make sure the trim is adjusted correctly for mic or line. The 414 has a 'trim' control to adjust the input. OTOH maybe it IS a lot - no way of us knowing.
![tascam 424 mkii degausser tascam 424 mkii degausser](https://electricdenimstudios.com/wp-content/uploads/2016/05/Tascam-424-MKiii-4-Track-Cassette-Recorder-2.jpg)
If you are used to digital audio, it may seem like a lot to you. The 424 mkII also reverted to the 414's iconic blue color.
![tascam 424 mkii degausser tascam 424 mkii degausser](https://www.negatron.org/wp-content/uploads/2009/02/tascam002z.jpg)
Over the internet, it is hard to say if your unit has more noise than it "should", anything will hiss if you turn it up loud enough, and of course Portastudios are not exactly high-end gear.
![tascam 424 mkii degausser tascam 424 mkii degausser](https://img.audiofanzine.com/images/u/product/normal/tascam-portastudio-424-mkii-3443.jpg)
When you stop the playback does the hissing also stop? Or at least get somewhat better? Is the hiss the same with the faders up as with the faders down? Are all unused channels off? (like those 5-6 7-8 knobs?)Īll electronic equipment has some self-noise.Īnd cheaper electronic equipment will have more of that noise. In the OP you said it was hissing "on playback" A proper mains-powered degausser is essential for demagnetising. Before any tape is even in the machine you can hear it hissing. Tascams 424 MkII/III and Yahamas MT4X are possibly the best all-round problem-solving.