Kitarat: kitarakamat ›

johanssen: Toi on varmaan hyvä boxi aloittajalle eikä oo myöskään pahan hintanen.
 
Jos aloittajan "efektipömpelit" on esim kaiku, delay ja chorus, siinä käy äkkiä niin, että ne onkin parempi korvata etupäästä stereoefekteillä ja siinä kohtaa toi SB-1 on parempi vaihtoehto.
 
Radialin sivuilta:
 
"What other differences are there between passive and active DI's?
For low output instruments such as an old vintage Jazz Bass, even this bit of loading can cause a bass player to notice a minute drop in level. For these artists, an active direct box like the Radial J48 tends to be a better solution. This also applies to some vintage instruments like a Fender Rhodes piano. The active DI has a built-in buffer or unity gain amplifier that deliver a stronger signal than the passive counterpart. The benefit with a passive direct box is the simplicity of not having to worry about local power, of course isolation and extreme signal handling. In the past, high output instruments would overload the typical active DI, and only in recent years has new switching power supply technology enabled us to increase the signal handling to where this is no longer a problem.
 
We often associate active direct boxes to condenser mics and passive DIs to dynamics. You can use either in many cases, but if you want more reach - say on a violin - the condenser tends to be a better choice just as an active DI will produce more air from an acoustic guitar. Active DIs also benefit by enabling us to control various parameters that are simply impossible using a passive circuit. For example, we produce a direct box called the JDX that captures the sound coming out of a guitar amplifier head while also capturing the back electro-magnetic impulse from the loudspeaker. To make this sound natural, a series of filters are employed and this circuit requires power.
 
Are there applications that you recommend active or passive DI based upon instrument?
As a rule of thumb, if the source is active such as a keyboard, we tend to recommend passive. If the source is passive like a Fender bass, we tend to recommend active. This reduces the gain stages in the signal path which reduces noise. Where the lines blur is with acoustic guitars that have built-in pickups. Folks are comfortable with active direct boxes and since we can now handle higher signal levels, this seems to work well. When it comes to piezo transducers, active is the only choice. These finicky devices sound best when they see a very high input impedance. Our latest PZ-DI direct box has a 10 meg-Ohm (10,000,000) impedance for this very reason. This smoothes out the peaks, eliminates the squawk and extends the frequency response making it much more pleasing for orchestral instruments such as upright bass, violin or banjo.
 
The challenge of course is noise. When you increase the input impedance, you have very little signal left to work with. So it often takes months of trial and error to eliminate the noise problems. Another concern these days is computers. They are omnipresent and tend to always have noise problems. We produce a hybrid direct box that combines transformer isolation to block DC and active buffers to block AC coming back from the PA system. This 'best of both worlds' works well for sound cards, CD players and iPods that produce CD quality audio."