Teac UD-507 High-Quality Preamplifier with Multiple Analog/Digital Inputs

The UD-507 is equipped with our proprietary “TRDD 5” discrete DAC,
designed with musicality as the top priority.
Following in the footsteps of TEAC's acclaimed 701 series,
the new “TRDD 5” discrete DAC offers a clear soundstage and accurate imaging,
providing listeners with a truly immersive musical experience.

Fully Balanced
Dual Monaural Headphone Amplifier

The UD-507 is a headphone amplifier featuring the TEAC-HCLD2 high current line driver,
which is characterized by its high current supply capability.
Compared to the previous model, the maximum output power has been greatly
improved by strengthening the power supply, resulting in a generous driving power of
1,200mW + 1,200mW (balanced output at 100 ohm load),
which is comparable to a dedicated headphone amplifier without DAC.
The power amplifier gain can be switched between 3 positions (Lo

Supported formatsUSB inputPCM16/24/32 bit44.1k/48k/88.2k/96k/176.4k/192k/352.8k/384k HzDSD2.8M/5.6M/11.2M/22.5M HzCoaxial digital inputPCM16/24 bit32k/44.1k/48k/88.2k/96k/176.4k/192k HzDSD2.8MHz (supported with 176.4kHz/24-bit DoP format)Optical digital inputPCM16/24 bit32k/44.1k/48k/88.2k/96k/176.4k/192k HzDSD2.8MHz (supported with 176.4kHz/24-bit DoP format)DAC sectionUSB DACIn-house designed Discrete DAC TRDD5Up-conversionup to 384kHz/32-bit PCMAudio inputsUSBUSB Type-C port × 1USB Type-B port × 1USB version2.0Transfer ModeAsynchronous mode transfer, Bulk PetCompatible SoftwareTEAC HR Audio Player (Windows, Macintosh)COAXIAL digital (rear)RCA pin ×1 (gold-plated)Input level0.5Vp-pInput impedance75ΩOptical digital (rear)TOS-link ×1Input level-24.0 to -14.5dBm peakAnalog (Balanced)XLR ×1 pair (gold-plated)Input impedance50kΩInput sensitivity5VrmsAnalog (Unbalanced)RCA pin ×1 pair (gold-plated)Input impedance24kΩInput sensitivity2.5VrmsBluetooth®Bluetooth® version4.2Output classClass2 (Range: approx. 33ft/10m)Supported profilesA2DP, AVRCPContent protectionSCMS-TSupported codecLDAC™, LHDC, Qualcomm® aptX™ HD, aptX™, AAC, SBCNo. of paired devicemaximum 8 devicesNo. of multipoint connection devicemaximum 2 devicesAudio outputsXLR balancedXLR ×1 pair (gold-plated)Maximum output level1kHz, full scale, into 10kΩ 0dB setting2.0Vrms+6dB setting4.0VrmsOutput impedance40ΩRCA unbalancedRCA pin ×1 pair (gold-plated)Maximum output leve1kHz, full scale, into 10kΩ 0dB setting2.0VrmsOutput impedance20ΩHeadphone outputsConnector 11/4” (6.3mm) TRS stereo jacks × 1 (gold-plated)Connector 2XLR 4pin jack ×1 (gold-plated)Connector 34.4mm 5-pole Pentaconn jack ×1 (gold-plated)Maximum outputBalanced1200mW + 1200mW (into 100Ω)Active Ground900mW + 900mW (into 32Ω)Unbalanced900mW + 900mW (into 32Ω)Supported impedances16 to 600ΩClock sectionExternal clock inputConnectorBNC (gold-plated)Input frequency10MHzInput impedance50ΩInput levelRectangle wave: equivalent to TTL levelsSine wave: 0.5 to 1.0 VrmsExternal control12V Trigger outConenctor3.5mm Monaural Mini jack × 1Output level12VMax. current supply100mAAudio performance192kHz/24bit PCM input, RCA output, DAC mode MULTIBITFrequency Response5Hz to 70kHz (+1/–6 dB)Total harmonic distortion0.01% or less (1kHz, LPF: 20Hz to 20kHz)S/N ratio105dB or higher (A-weight, 1kHz)Power supplyUS/CanadaAC 120V 60HzUK/EuropeAC 220 to 240V 50HzPower consumption18W (0.4W in standby)dimensions (including protrusions)290(W)×85(H)×249 (D) mm / 11.4”(W)×3.3”(H)×9.8”(D)Weight4.9kg / 10.8lbsIncluded accessoriesPower cord, Remote control (RC-1334), AAA Batteries for remote control × 2, feet cushions × 3, Owner's Manual (with warranty)