Krzysztof’s Burson Playmate 2 with Audeze LCD-1, RHA MA750i and Koss Porta Pro

• Impedance: 16 Ω
• Sensitivity: 99 dB/1mW (at Drum Reference Point) ≈ 117.0 dB/V (calc.)
• Frequency response: 10 Hz – 50 kHz
• Plugs / cables supplied: 2 m 3.5 mm to dual 3.5 mm cable

Matching notes: At 16 Ω and 99 dB/mW, the LCD-1 is a low-impedance load: about 0.45 V (13 mW, 28 mA) for 110 dB SPL (calc.). Burson rates the Playmate 2 at 3.5 W (SE) into 16 Ω, which is about 7.5 V RMS (calc.), roughly 24 dB more than that. The Playmate 2’s under 2 Ω headphone output impedance is less than 1/8 of the load. ^{[1] [2] [3]}

• Impedance: 60 Ω
• Sensitivity: 101 dB SPL / 1 mW ≈ 113.2 dB/V (calc.)
• Frequency response: 15 Hz – 25 kHz
• Plugs / cables supplied: fixed 1.2 m cable, 3.5 mm plug

Matching notes: At 60 Ω and 101 dB/mW, the Koss Porta Pro is a low-impedance load, and an efficient one: about 0.69 V (7.9 mW, 12 mA) for 110 dB SPL (calc.). Burson does not publish a 60 Ω rating for the Playmate 2. Its 32 Ω and 100 Ω ratings (2.5 W SE; 0.6 W SE) fall either side of it. The Playmate 2’s under 2 Ω headphone output impedance is less than 1/30 of the load. ^{[4] [2] [3]}

• 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
• Output impedance: <2 Ω (headphone); 15 Ω (pre out)
• Output voltage: RCA not published
• Gain: High / Low; dB not published
• Inputs: USB (XMOS; PCM to 768 kHz/32-bit, native DSD512); Toslink
• Input impedance: 38 kΩ
• Outputs: RCA pre out; headphone jack (SE)
• DAC / chipset: ESS SABRE32 ES9038Q2M
• Other: Model P171; SE only; THD <0.002%; FR ±1 dB 0-35 kHz; DAC THD+N 0.0018%

^{[2] [3]}

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. Audeze LCD-1: audeze.com
2. Burson Playmate 2 product page
3. Burson Playmate 2 User Manual V1.6 (Burson downloads)
4. Koss Porta Pro: koss.com