The preamp was purchased from Hattor Audio in 2018. Been in one location. Very good condition. Khozmo Dual mono 64 Step Attenuators with Takman Rex Resistors. 4 RCA Inputs + 1 XLR (wired single ended) input. 4 RCA Outputs. External Power supply. Remote control. Comes in a metal case Also available (pics and details to come soon) is a 2020 Tortuga Audio tube preamp buffer TPB.V1. Included are two pairs of tubes are Electro-Harmonix 6H30Pi Gold Pin NOS. One pair has very low hours. The combination of the passive preamp and TPB offer an active stage and eliminates any impedance mismatching with the amplifier, and the sound is excellent - transparent, fast, and with no noise. Price on the TPB.V1, with two sets of tubes will be $850.

Hattor Ultimate Passive preamp (Black). https://www.hattor.com/dualmono_preamp_the_big.html Hattor Ultimate Passive preamp. Used and looking mint. In mint condition with flight case and remote (silver). Universal power supply for any region - only to power the remote control. Completely passive excelling in sound. The item will be packaged very well. Many thanks!

Hattor Ultimate Passive Preamp (Silver). Stock photos of black model also shown, but for reference only. AMRG trans resistors and SE / XLR inputs / outputs. Their top of the range model. In great condition with flight case and remote (which works really well). Universal power supply for any region - power supply is only a wall wart to power the remote control, it’s not actually part of the signal path. Completely passive - completely transparent to the signal! https://www.hattor.com/dualmono_preamp_the_big.html

This is a fabulous dual mono passive preamplifier, with Amtrans resistors, all RCA in/out, sturdy remote control for all functions, and external power supply, hand-made in Poland. 64 step volume control 1db/step; switchable between stereo and dualmono modes; used for less than a year. Ships in original packing and rigid flight case. Selling only because I bought the balanced version of the Hattor. Thats how much I like it! Shipping weight is 17 lbs.

Hattor Ultimate Passive Preamp (Silver). Stock photos of black model also shown, but for reference only. AMRG trans resistors and SE / XLR inputs / outputs. Their top of the range model. In great condition with flight case and remote (which works really well). Universal power supply for any region - power supply is only a wall wart to power the remote control, it’s not actually part of the signal path. Completely passive - completely transparent to the signal! https://www.hattor.com/dualmono_preamp_the_big.html