Bartolini Adjustable Gain Buffer (AGDB/918-2), Dual Channel

The AGDB/918-2 is a buffer preamp that features adjustable gain which allows you to boost the input signal up to 12dB while maintaining flat frequency response. It is less than half the size of a 9-volt battery making it ideal for instruments with limited cavity space. The AGDB/918-2 provides a strong output signal and isolation from external equipment that may otherwise adversely affect pickup tone. It is often used to make a passive instrument active with very little effort. With only 4 wires to connect – power, ground, input, and output – it is a simple way to add flexibility and power to your guitar or bass with active or passive pickups. The AGDB/918-2 provides 2 independent buffers in the same space as the AGB/918-2. This is great for separately boosting 2 pickups into either a simple dual-volume setup or even into an EQ preamp. When you have 2 passive pickups with low output, you can easily boost and isolate them with the AGDB/918-2 – effectively making them active pickups. Like all of our preamps, the AGDB are internally shielded to reject electromagnetic noise and include internal filters to block AM and FM radio on the inputs. Bartolini set the standard of fully sealing the sensitive electronics. We use professional double tin plated pure copper wire with durable semi-rigid insulation. This ensures the 4" pre-stripped wires don’t flop around in the cavity and the wires don’t cut through the insulation over time. Either preamp can be used with either a single 9-volt battery (9-volt operation) or two 9-volt batteries wired in series (18-volt operation) for 6dB extra headroom with no tonal change. Both versions delivery clear and transparent sound with extremely low distortion.

• dual channel buffer preamp for electric bass
• clear transparent sound with very low distortion
• suitable for magnetic pickups
• two independent buffer channels to combine two pickups
• input impedance 1 MOhm
• output impedance 3.6 kOhm
• adjustable gain up to 12 dB for each channel
• supports 18V operation for 6 dB extra headroom
• power supply via 1 x 9V / 2 x 9V (18V) battery (not included)
• dimensions (L x W x H) 26.7 x 20.1 x 10.9 mm / 1.05" x 0.79" x 0.43"
• Note: The right and refund policy does not apply to electronic components if their cables have been cut or soldered, if they show signs of use, if they have already been installed or other damage affecting the condition of the goods is present.

Note: Replacement pickups may differ slightly in shape and dimensions from the original pickups. Adjustments may be necessary. It is recommended that you check the schematic drawings carefully. Deviations in the size and shape of the pickups do not constitute grounds for complaint.