Flashback 2 Delay
1
 The Z-DSP is an open-source 
DSP system that integrates 
with a Eurorack modular 
environment. It features two channels 
of 15kHz, 24-bit audio processing 
with voltage control over parameters 
and various parts of the audio path.
However, without creating your 
own programs or buying a pre-
programmed cartridge, it does very 
little. Luckily, TipTop have created a 
bunch of cartridges covering granular 
synthesis, physical modelling, 
pitchshifting, chorus and delay. My 
favourites though are the two made 
by Valhalla DSP: ‘Shimmer’ and ‘Halls 
Of Valhalla’. massive and brilliant. 
 www.tiptopaudio.com 
VerDICt 8.8 
2
 Adding  non-musical 
elements to drones is the 
perfect way to add movement 
and interest. Radio is one source of 
such material, especially when 
trawling the Shortwave spectrum.
Conveniently, Koma have recently 
put together the Field Kit, bringing 
together a CV-controlled radio 
alongside a bunch of modules for 
experimenting with electroacoustic 
sound. This provides a perfect use 
for contact mics and electromagnetic 
pickups, as well as motors, solenoids 
and sensors. The optional Field Kit 
Expansion pack provides you with 
various devices ready-wired for use 
with the kit, and the manual has a 
wealth of sonic ideas. 
 www.koma-elektronik.com 
VerDICt 9.0 
3
 First seen at NAMM this 
year, and initially coming to 
market in a crowd-funded 
campaign, the PLUS pedal is neither 
a delay or conventional looper pedal. 
Looking much like a fancy piano pedal 
with knobs on, it uses sampling and 
some neat algorithms to ‘catch’ parts 
of a note or chord. However it goes 
further than being a simple sustain 
tool, as up to fi ve layers can be 
combined at once, with plenty of 
control over fade-in and fade-out 
times. It’s not cheap, and benefi ts 
from additional ambient processing, 
but a great tool nonetheless. 
 www.pluspedal.com 
VerDICt 8.9
4
 I great way to add complexity 
to drones is to build things 
up in layers, especially by 
separating the various elements into 
distinct frequency areas. The Vermona 
twinVCF is perfect for this task, as it 
has two multimode fi lters that can be 
confi gured for parallel or serial routing. 
For example, stereo material can be 
routed through similar fi lter types for 
each channel, but with offset cutoff 
frequencies – then add some 
modulation via the CV inputs to create 
movement. For more fl exibility, you 
can add the tVCF-Extension module 
(£128) , which provides access to 
the individual fi lter band outputs 
 www.vermona.com 
VerDICt 8.6 
5
 A simple but effective way to 
create drones is by feeding 
sounds with a slow attack 
into a long delay with the feedback 
turned up, so TC’s new Flashback 2 
is a perfect candidate, with a hefty 
seven-second maximum delay. Using 
one of the clear digital algorithms, a 
layered drone should go on for hours 
with little tonal degradation. Of course, 
sometimes imperfection is exactly 
what you want. In this case the 
Tape, Reverse or new Crystal setting 
work well. The pressure-sensitive 
‘MASH’ feature adds another layer 
of user interactivity. 
 www.tcelectronic.com 
VerDICt 8.7 
CREATIVE SOLUTION  Originality is key, and 
the Koma Field Kit certainly ticks this box – but 
be prepared to put in some time for good results. 
FM VerDICt
THE MUST-HAVE A delay unit is essential for creating 
drones, and Flashback 2 is a great contender that, unlike 
many guitar pedals, provides detailed editing via USB.
5
 TC  Electronic 
Flashback 2 Delay 
 £161 
 Vermona 
twinVCFilter 
 £362 
4
Drones | Reviews
105
FMU326.rev_grouptest.indd 105 29/11/2017 13:49


