Oleg’s Burson Funk with Heco Victa Prime 202 and Piega TMicro 40 AMT

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Comparing Funk with Yamaha A-S301. First minutes of listening. Wow!!!

The System

Listening with

Heco Victa Prime 202
Piega TMicro 40 AMT
beyerdynamic DT 770 PRO 250 Ohm · Headphones: closed-back, dynamic, circumaural
  • Impedance: 80 Ω (page default; 32 and 250 Ω versions sold)
  • Sensitivity: 96 dB SPL (reference not stated on page)
  • Frequency response: 5 Hz – 35 kHz
  • Plugs / cables supplied: straight cable with 3.5 mm plug and 6.35 mm adapter (current version)

[1]

FiiO FH5 · Headphones: in-ear (IEM), hybrid 1 dynamic + 3 Knowles BA
  • Impedance: 19 Ω
  • Sensitivity: 112 dB/mW ≈ 129.2 dB/V (calc.)
  • Frequency response: 15 Hz – 40 kHz
  • Plugs / cables supplied: 120 cm cable, MMCX, 3.5 mm plug
  • Other: max input power 100 mW; 8 g per earbud

Matching notes: At 19 Ω and 112 dB/mW, the FiiO FH5 is a low-impedance load, and an efficient one: about 0.11 V (0.63 mW, 5.8 mA) for 110 dB SPL (calc.). Burson does not publish a 19 Ω rating for the Funk. Its 16 Ω and 32 Ω ratings (3.5 W SE; 2.5 W SE) fall either side of it. The Funk’s under 2 Ω headphone output impedance is less than 1/9.5 of the load. [2] [3] [4] [5]

Piega Orbita S90

Burson

Burson Funk · Headphone amplifier / integrated amplifier
  • Output power (headphone): 16 Ω 3.5 W · 32 Ω 2.5 W · 100 Ω 0.6 W · 150 Ω 0.4 W · 300 Ω 0.15 W
  • Power: 8 Ω: 35 W · 4 Ω: 45 W
  • Output impedance: <2 Ω (headphone)
  • Gain: not published
  • Inputs: RCA L/R
  • Input impedance: 38 kΩ
  • Outputs: headphone (SE); speaker terminals
  • Other: Model P-300; THD <0.03%; FR ±1 dB 0-35 kHz; speaker S/N 92.5 dB

[3] [4] [5]

Also in the system

Aune X8 · DAC: desktop DAC (FPGA + ESS, user-swappable opamps) – marketed as “X8 Magic” · discontinued
  • Frequency response: 20 Hz – 20 kHz ±0.2 dB
  • Output voltage: RCA 2.0 V
  • Inputs: USB (768 kHz/32-bit, DSD512); coaxial (384k, DoP128); optical (192k, DoP64)
  • Outputs: RCA line out
  • DAC / chipset: ESS ES9038Q2M (per retailer review)
  • Other: SNR 117 dB; THD+N 0.0006%

[6] [7]

Magnat MC-200
xDuoo

Specs from manufacturer data unless a source below says otherwise. “calc.” values are worked out from those figures (V = √(P × R); 110 dB SPL used as a loud reference level). Gear listed without specs is not in our spec library yet.

  1. beyerdynamic DT 770 PRO 250 Ohm: north-america.beyerdynamic.com
  2. FiiO FH5: fiio.com
  3. Burson Funk product page (funk page)
  4. Burson Funk product page (funk page, archived 2021)
  5. Burson Funk User Manual V1.5 (Burson downloads)
  6. Aune X8: linsoul.kr (authorised distributor page + retailer review)
  7. Aune X8: hifigo.com (authorised distributor page + retailer review)