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NPD - Durham Sex Drive

Nov 5, 2010
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Schwinggg!!! What an awesome pedal! I had never heard of the concept of 'dirty compressor' until reading a few postings here on TB. Decided to try the Sex Drive, and also ordered a FF Accountant which is en route.

I love just a bit of compression, and a bit of saturation in my bass tone. Saturation as in fatness of tone from cranking the gain just to the point of audible breakup, and then backing it down to where the breakup is gone but there is a bit of extra harmonic juiciness. On my main board I have an Empress comp, and 4-5 different flavors of light OD for variety. Always takes a bit of fiddling to dial in the drives and the compression when setting up.

Given the number of parameters that I have to adjust to get my sound with a typical compressor, and the interaction between the drive output and comp threshold settings, I was skeptical about the all-in-one concept of the Sex Drive. Usually comps with pre-set attack and release have much too fast of an attack for my taste, and often heavy comp ratio as well in order to get a more dramatic effect. How could this pedal possibly have all the settings pre-set to work for me?

In spite of these misgivings, I had to try it out - in large part due to favorable reviews here on TB. Well that and the name. Happy to say, I'm glad I tried it! It's as if I sat down with the pedal designer and he took notes on how I setup my comp and drive, and built all my preferences into one little box!

The Soft comp setting has a very smooth transition to gain reduction, you can tell it's compressing but no obvious point when gr kicks in. The hard setting has a nice but subtle thud added in the attack. Basically a hard knee / soft knee switch to my ears, though I don't know if it's just a higher ratio for the 'hard' setting or if the compression curve really is different. I prefer the hard setting but soft is a nice option as well.

Setup could not be easier. I set the comp switch to hard, dial up the gain to the point just before breakup, and set the output to match unity bypass. Perfect! Moderate amount of compression, no pumping, attack slow enough to let the natural attack of my bass through, slight thump added to the attack, and fat harmonics that really bloom on notes higher up the neck.

The tone knob can add a lot of high end when dialed all the way up; but dialing it completely off still leaves all the definition that I want. Totally different from a typical tone control that rolls off all the highs and leaves just the murky bottom end. For my playing (mostly fingerstyle and thumb, no slap) there was very little difference between all the way CC and noon, so I just kept the tone all the way down.

Other reviews on TB have noted some LF rolloff with this pedal; I didn't notice it on 4-string during rehearsal or when practicing at home. I'm usually sensitive to low end loss; if there is some with the SD it was not enough to make me change my EQ settings.

Even at the most extreme gain setting there is just a slight amount of breakup, probably more in the 'dirty boost' category then 'overdrive'. It won't replace my regular pedal board, but for rehearsals and jamming when I don't want to drag along the board this is just the ticket and I can power it with a 9v.

There is no gr metering on the pedal. Usually that would be a problem for me - I'll typically set up a comp by ear, make a mental note of the corresponding meter action, and then use the meter for future setup or to verify settings especially in noisy live situations. With the SD I'm dialing in the sound based on amount breakup, which I find is easier to hear then compression action esp on a noisy stage. So while it would be nice to have a meter I think it's easier to live without it due to the dual nature of this pedal.
 
Yep the Sex Drive is a really nice tone enhancer, got one in trade several years ago and it has stayed in my studio trick bag ever since. Like the Yamaha NE-1, Submarine and Ictineo it just does that something special to your signal and not just for bass but also for guitar and keyboards. I once used the Sex Drive to put the finishing touch on a Moog bass part that just would not sit right in the mix.
 
Please report back on how the Accountant compares to the Sex Drive. I was thinking of getting one but I already have a Sex Drive and don't want to get the Accountant if its just going to be completely redundant.
 
I love the Sex Drive- I was looking for a fairly tight punchy/grindy tone-machine and the SD really fit the bill better than anything else I've tried. I really like it with guitar and Rhodes Piano as well. I do find with the Presence control turned up (which is the tone I got it for) that it does seem to noticeably tighten the bass. I haven't fooled with rolling the Presence down, so that might make the roll-off less apparent. Since I use it as an always-on pedal when I am using it the bass roll-off is not an issue for me.

The Accountant is great, but definitely different. I think its better at sounding more "effecty" with the compression- one of my favorite tones with the Accountant is a hard compression, but the Attack seems fairly slow so you still get an aggressive punch. It adds some punch at lower compression too. I don't always like the break-up as much on the Accountant as the Sex-Drive, and with some basses I just can't seem to find the right setting due to the limited Pad/Ratio adjustments. The combos I like I like ALOT though, and definitely in a different way than the Sex Drive. It can also be very noisy in some settings which is unfortunate (probably my biggest critique).
 
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I received my Accountant a few days ago and had a chance to mess around with it a bit, so thought I'd add my observations - which btw are consistent with info from others posted earlier in the thread:

The Accountant shows up looking very reserved, just a plain metal box with minimal etchings to mark the controls; one knob and two three-way switches. Turns out the inner life of the Accountant is far from reserved, in fact this is one aggressive pedal! And how can something as complex as this - overdrive plus compression - be managed with just those simple controls?

The three way input switch sets the amount of signal going to the circuit, and the three way ratio switch gives options for different compression amount. The two switches are of course very interactive, and there are many different levels of aggression possible from the nine combinations. I was able to get great sounds from both active (Alembic Excel) and passive (Jazz with SD Antiquity II) basses. But, even the mildest setting is not for the faint of heart!

There is a very large HF boost inherent in this circuit, with no way of rolling off highs. I did find myself wishing for the three-way HF switch that the Barbershop has. So, I fed the accountant through an Ictineo (Submarine) pedal that I recently acquired, and used the Tone control on that to tame the highs. Even better was pushing a VT Bass pedal with the Accountant, letting the built-in cab simulator in the VT take care of the highs. Really great sound from that combo, I can imagine Accountant -> SVT -> 8x10 would be fantastic. Also, the HF boost might be just the thing for a darker sounding bass to get extra growl and definition.

As others have observed, this pedal produces a lot of hiss. However, I think it's entirely due to the HF boost and can easily be rolled off with a LPF or tone control. That still left me with plenty of definition, and hiss was no longer an issue. To my ear the boost and hiss are similar to what you'd get with the Sex Drive if you push the Tone control past about the 3/4 point.

For a standalone tone enhancer, I much prefer the Sex Drive. It's way smoother, and you can dial in the exact amount of drive that you want thanks to having a dedicated Gain knob. The Accountant, for me, requires something following it to manage its intensity. But, it has a raw aggressiveness that can't be denied. Sex Drive can be powered with battery, whereas the tiny enclosure of the Accountant does not have space for one.
 
I love the Sex Drive as a tone enhancer/mild comp. Some people say there's low-end loss, but I feel like it's the opposite, it puts this extra thump in my sound but it's ultra tight and not muddy, and at the same time it enhances high frequencies without getting all ice-picky. It's hard to describe, it's incredibly subtle compared to most stompboxes but it just makes the sound bigger and clearer and better. I don't use the SD to generate breakup, gain stays at about 9 o'clock, but it does something awesome to dirt that comes before it in the chain.
 
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I love the Sex Drive as a tone enhancer/mild comp. Some people say there's low-end loss, but I feel like it's the opposite, it puts this extra thump in my sound but it's ultra tight and not muddy, and at the same time it enhances high frequencies without getting all ice-picky. It's hard to describe, it's incredibly subtle compared to most stompboxes but it just makes the sound bigger and clearer and better. I don't use the SD to generate breakup, gain stays at about 9 o'clock, but it does something awesome to dirt that comes before it in the chain.
It's just one of those little sweet magic boxes, it's tempting to use all the time but like all good things when it becomes an addiction - you cheat the high.