New Products

5W Guitar Valve Amplifier Kit - Fender 5F1 Champ Style   

  This is our take on the famous Fender Champ Guitar Amp from the 50s. It offers a beautifully rich, creamy sound with a lovely warm bass and mid response that you can only get from a valve amp. When we tested this kit for the first time it's sound surpassed all of our expectations and we are all super excited to share this experience with you.

  Using a high voltage DC-DC boost converter instead of the conventional power transformer and rectifier valve, this amp kit is lighter, smaller and more cost effective without compromising on the performance. Since the boost converter requires only a 12V DC input, this amp can also be used on the go, and can even be powered by 12V batteries. Our design also includes a cathode bypass capacitor on the first triode gain stage to increase the gain, this is a common modification done to the original amp and we think this makes it sound better. If you want the original sound this capacitor can be omitted.

  We recommend using a 12V power supply that can supply at least 5A like this one BSM1250. 

The following components are included in this kit:

• Step by step instruction manual
• 68kΩ ½ Watt carbon film resistor x 1
• 1MΩ ½ Watt carbon film resistor x 1
• 1MΩ 16mm logarithmic potentiometer x 1
• 1.5kΩ ½ Watt carbon film resistor x 1
• 100kΩ ½ Watt carbon film resistor x 1
• 22kΩ ½ Watt carbon film resistor x 1
• 10kΩ ½ Watt carbon film resistor x 1
• 220kΩ ½ Watt carbon film resistor x 1
• 470Ω ½ Watt carbon film resistor x 1
• 270Ω 0.4 Watt metal film resistor x 1
• 1.1kΩ 0.4 Watt metal film resistor x 1
• 1kΩ ½ Watt carbon film resistor x 1
• 22nF 305V polypropylene capacitor x 1
• 8µF 450V axial electrolytic capacitor x 1
• 16µF 450V axial electrolytic capacitor x 1
• 22µF 35V tantalum capacitor x 1
• 100nF 50V multi-layer ceramic capacitor x 1
• 1µF 50V multi-layer ceramic capacitor x 1
• 1.5µF 35V tantalum capacitor x 1
• 6V6GT or 6П6С beam tetrode valve x 1
• ECC83 or 12AX7 double triode valve x 1
• LM317T 1.5A adjustable voltage regulator x 1
• 6.3mm PCB-mount switched jack socket x 1
• 6.3mm panel-mount switched jack socket x 1
• 2.1 x 5.5mm DC socket x 1
• 5mm red LED x 1
• B9A PCB-mount valve base x 1
• Octal PCB-mount valve base x 1
• High voltage DC-DC step up boost converter x 1
• 5F1 Output transformer x 1
• 10A SPST toggle switch x 1
• 1 foot of 6A double core power cable x 1
• 1 foot of 42 strand speaker cable x 1
• 1 foot of high voltage power cable x 1
• Finned heatsink x 1
• PCB screw terminal x 1
• M3 nut and bolt x 1
• Heatsink thermal pad & bush x 1
• PCB x 1

To assemble this kit, you will need the following tools:

• Soldering iron
• High quality solder
• Side cutters
• Cable stripper

 This kit will fit nicely in a G116 enclosure (Hammond 1550G).

47dB Microphone Preamplifier Kit

A simple but reliable portable RDA5807M-based radio capable of receiving FM radio in the 87-107MHz range. The radio can be tuned via the 2 rightmost buttons (in 100khz increments) and the volume using the buttons on the left. It can be powered by 2 x AA batteries, or via the micro-USB socket provided. This device also has a headphone output (3.5mm jack).

Click here for manual

An Instructables article detailing the assembly process can be found by clicking here

Technical Specifications:

Input Voltage: 3-5VDC
Output impedance: 8Ω
Output power: 0.5W
Receiver frequency: 87MHz-108Mhz
Dimensions (fully assembled): 107 x 70 x 23mm

citronic 170.862UK Compact Mixer with DSP, USB Play/Record/PC and Bluetooth

Compact format audio mixer with 2, 4 or 6 mono input channels, a stereo line input and a further mini jack stereo input. Each mono mic/line channel has a combo XLR/jack input with +48V phantom power switchable in pairs for the XLR inputs. Each mic/line channel has a Gain control for matching the input source and a low-cut switch to filter out rumble or handling noise from microphones. Each mono channel also has High/Low EQ controls and an FX level control. Pairs of mono channels can be linked to act as a stereo left + right pair as required. The onboard foot-switchable DSP effects engine has 99 presets for delay, reverb and modulation effects, each of which can be adjusted using two parameter controls. An onboard Bluetooth receiver has an illuminated pairing button and independent volume control. The USB type-A port on the top panel is for playback of audio files or can be used to record the main outputs to a USB storage device or as an external audio device when connected to a laptop. Output is delivered to a pair of balanced XLR connectors to provide low noise operation for high quality studio or live performances.

Weight: 0.875kg
Dimensions: 183 x 182 x 60mm
Inputs: 2 x combo XLR/jack + stereo L+R 6.3mm + stereo 3.5mm
Power supply: 5V DC 1A min. (USB-C adaptor included)
Power consumption max.: 5W
Effects: 99 program DSP (2 parameter controls)
DSP sample rate: 48khz (24-bit)
Audio source: Bluetooth receiver, USB mp3 player/recorder
Bluetooth version: v5.1 (+BR+EDR+BLE)
USB version: v1.1 audio (mp3/wav/ape/flac)
EQ low: ±15dB @ 80Hz
EQ high: ±15dB @ 12kHz
Phantom power: +48V switchable in pairs (XLR inputs only)
Frequency response: 20Hz - 22kHz (±1dB)
Input level: Mic +10dBu max. / Line +22dBu max.
Input impedance: Balanced XLR 2k Ohm, Balanced TRS jack 10k Ohm
THD +N: <0.05% @ 1kHz
Noise: EIN -122dBu (22Hz - 22kHz)
CMRR: >75dB (Mic 1kHz)
Sensitivity: XLR -60 to +10dBu, TRS jack -20 to +20dBu, Stereo -20 to +14dBu
Crosstalk, stereo: >80dB (1kHz fader shutoff)
Outputs: Left + Right balanced XLR, Headphones 6.3mm jack
Max. output level: XLR +22dBu, TRS +20dBu