Aurora Audio GTP1 Mono Preamp

The Aurora Audio GTP1 is a single-channel preamp built on the same circuitry as the GTP8 and essentially a GTQ2 without EQ. It’s not a clone, but an original Aurora design featuring exclusive input and output transformers for rich, musical tone.

The DI uses a pair of bootstrapped transistors, offering 10 MΩ input impedance and an additional +10 dB of gain—perfect for guitars and instruments, capturing every nuance without loading the pickups. It also handles high-level line signals, making it equally versatile for playback devices.

Gain is adjustable in 10 dB steps from –10 dB to +80 dB, with a level pot for fine control from +6 dB to –6 dB (down to infinity), allowing everything from clean precision to overdriven textures.

A robust custom switching power supply provides massive headroom and accepts global voltages (85–265 V, 50/60 Hz). The all-steel chassis ensures durability, shielding, and reliability on the road or in the studio.

SPECIFICATIONS:

Input Impedance: 1200 Ohms
Output Impedance: <50 Ohms
DI Input Impedance = 10 mOhm
Noise at +80dB gain, terminated 200 ohms and measured 22 Hz to 22 kHz is <-47 dBu giving an EIN of better than -127 dB
Frequency Response: -1 dB at 20 Hz and >50 kHz
Distortion plus noise at unity gain at 1 kHz is <0.05% measured 22 Hz to 22 kHz
Maximum Output: +26 dBu

Serial no: #24006

The PSU is switchable between 115/220V, currently set to work on 220V (1A fuse).
EU power cord included.

We ship worldwide, feel free to ask for a precise shipping quote.

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.